30 day Arm growth experiment

Article by Stefan Burns - Updated June 2022. Join the Wild Free Organic email newsletter!

Author Stefan Burns Performing a Front Double Bicep

I performed a 30-day experiment to grow my arms and forearms because even though I had been training my arms with compounds for years and increasingly directly with bodybuilding techniques, my upper arms and forearms were still sitting at just 15" and 12.25" respectively, and decided I wanted to grow them both to the next level.

The premise was simple:

Build as much size as possible in one month while simultaneously improving the symmetry between my biceps, triceps, and forearms

To do that I dramatically increased my arm training frequency, changed my exercise selection, altered my diet, and focused on recovery.

Background - Having a 77.5" wingspan at a height of 72.5", I have found it difficult to increase the size of my arms. Strength was never a limiting factor except in tricep-heavy pressing movements. I've been able to row and pull-up as much as my back can handle, and grip (mixed) more than my deadlift, but I always have had issues adding arm mass. I've tried blood flow restriction training (BFRT), the "chin-ups & compounds = big arms" approach, a dedicated arm day, everything that is typically recommended. I saw limited progress from each of those methods, but my arm size never increased dramatically like promised.

With the experiment, I started a lean bulk a few days prior and I made my arms a major focus. Every day for a month, I did five weekday morning workouts exclusively targeting the arms. Other weekly regular workouts also included direct arm training scattered between two bodybuilding workouts, four weekday full body workouts, and a Saturday strongman workout. The full workout protocol is below.

30-Day Before and After Results

Arm Measurements - Day 1 vs Day 30. Pictures Taken Flexed but Unpumped

In the span of 30 days my left and right arms increased from 15 1/8" to 15 1/2", an increase of 3/8"! To gain that much size naturally in a month is phenomenal. Additionally, I started to do a lot more direct forearm work, increasing in size my left and right forearms from 12 1/4" to 12 3/4", a whopping increase of 1/2"!

Arguably my forearm gains are the more impressive of the two results from the 30 day arm challenge, having registered 1/2” gain from a smaller starting diameter.

Symmetry approved across the board. My forearms are now more symmetrical with my upper arms, and I was able to add some size to the long head of my triceps, which forms the coveted “horseshoe”. All measurements were performed upon waking up in the morning, flexed with no pump.

Scroll through the four photos too see all the data. You’ll notice that I actually put on 1/4” on my upper arms in the first 10 days of the program, and then there was a 20 day plateau until I hit my first 15 1/2” measurement. If you’re fine with slightly less overall progress but over a shorter time-frame, run the below workout protocol over weeks instead of the full 30 days.

30 Day Arm Challenge Protocol

In order to push new arm growth, this program will push your limits and require dedication and consistency. Quick 15-20 minute morning arm workouts keep muscle protein synthesis elevated locally in the biceps, triceps, and forearms, and the nightly workouts push the myofibrillar hypertrophy further with heavier, higher recruitment exercises.

Nutrition for Arm Growth

For muscle growth to occur you need to eat in an overall caloric surplus. Since the arms are already a smaller, more difficult muscle group to grow, I would keep calories on average about 300-500 over maintenance. I stacked my calories and carbs around my workouts. I drank a muscle building shake containing pasture raised eggs and protein after every morning and night workout, and that helped tremendously. Meal timing is only useful though if the rest of your diet is cleaned up and on point.

I was also running a Cistanche and Cholesterol Protocol during this 30-day arm challenge, and I definitely think that positively contributed to my success of adding 3/8” to my upper arms and 1/2” to my forearms. None of these nutritional tips will matter though without enough water. Proper hydration is so important because water is the primary component of muscle tissue, so endeavor to drink 1 gallon of pure filtered water daily.

Recovery for Arm Growth

With this much intensity, frequency, and volume applied to such small muscle groups, sleep and recovery need to be prioritized. Aim for 7-9 hours of high quality sleep per night. I also used the sauna 3-4x a week for 20 minutes. While in the sauna I massaged my arms and forearms, driving blood-flow to the area and breaking up any tight tissues I encountered. Heat therapy is very healing and boosts growth hormone release. By massaging my fascia I allowed my arms to stretch the fascia and therefore, room to grow. Be mindful of your cortisol levels and don’t run into adrenal fatigue.

Morning Workouts keep Growth Stimulated 24/7

Muscle protein synthesis stays elevated for hours after exercise, and the purpose of morning workouts for this arm growth experiment is to elevate MPS first thing in the morning. Morning workouts are also a good opportunity to increase the mind muscle connection and get a satisfying arm pump. It’s during the five weekly morning workouts where you can really examine what needs to be worked on symmetry wise, and modify any variables that might improve symmetry. Establishing a morning routine is important, make arm workouts a part of it!

Evening Workouts for Building Arm Muscles

Muscle protein synthesis in the arms is declining around the time an evening workout is scheduled. Evening workouts load the weight higher and stimulate muscle protein synthesis for the body more systemically. If you are going to a gym, there is more equipment at your disposal too, so a great variation of exercises can be performed. At the end of an evening workout, perform some stretching and self-recovery practices in order to reduce muscle degradation. If muscle degradation levels are high, triggering MPS is less effective. Recovery is just as important as the workouts themselves!

Morning Workouts

These workouts are performed in a circuit fashion, with each exercise proceeding the last. Rest for 60-90 seconds in-between. If 5 rounds is too long of a workout to perform in the morning, perform 3 rounds instead.

Monday, Thursday

Ring Tricep Extensions 5 x 20 - 30

This exercise is easy on the elbows and hits the triceps long head very effectively. Sit deeply into the stretch at the bottom and engage with your triceps to drive out of that position. Keep the tension constant.

Ring Curls 5 x 20 - 30

Ring Curls are a great exercise which overloads the biceps safely. Your body-weight provides a good stimulus, but the force curve of the exercise ensures relatively even resistance throughout the curl. If you don’t have rings perform them later at the gym on a smith machine.

DB Wrist Curls 5 x 10

Wrist Curls are one of the best ways to build forearm mass, and the Dumbbell variety is no joke. Start counting reps once you can feel the burn.

Tuesday, Friday

Band Tricep Extensions/Overhead Band Tricep Extensions 5 x 20

I like to superset these exercises. Hang two bands off of a pull-up bar, one more stronger than the other. I use two 41” resistance bands, and when you tire with the stronger band from the tricep extesnions, move to the lighter band for the overhead exercise. Focus on improving you mind muscle connection with your triceps on each rep, and hold the top of each contraction for a couple seconds

Hammer Curls 5 x 20

Hammer Curls are a fantastic dumbbell exercise which evenly builds the biceps and forearm muscles. Keep your elbows in front of your body to place more strain on your biceps and to limit the amount of movement “cheating”. If you perform this exercise correctly you’ll discover it’s one of the best arm and pump exercises.

Forearm Club Raises 5 x 25 - 20

Find an offset weight such as an Indian club or a thick piece of metal piping. This movement trains forearm adduction, and is a very balanced forearm builder.This also makes for a good burnout exercise after the other two upper arm movements.

Wednesday

Wednesday’s workout is one of the easiest to perform at home, only requiring a doorway pull-up bar. I also like this workout because it improves body-weight movement patterns and strength. The arm pump I got from these workouts was the weakest, but has the most functional carryover.

Close-Grip Push-Ups 3 x 30 - 40

Place your hands close together but neutral (diamond push-ups can aggravate your shoulders). Perform push-ups, keeping your core tight, scapula in proper positions, and direct all your focus to the triceps. Be sure to lockout each rep as that is where the triceps are activated the most.

Close-Grip Chin-Ups 5 x 10 - 15

Grab onto a chin-up bar with a supinated grip, hands just a couples inches apart. Perform a chin-up but lay slightly more horizontal and place all your focus on your biceps. Squeeze at the top and slowly go back down to a dead hang. Done properly these are a fantastic bicep mass builder.

2-3” Bar Hangs 5 x Hold As Long As Possible

Bar hangs are a great way to build forearm strength and endurance, and I like to do them for less time on thicker handles. Wrap your thumbs around the bar and if getting a thick bar setup is too difficult, perform towel hangs instead, which is just as challenging for your grip.

Night Workouts

Upper and lower arm exercises for the night workouts were more varied than the morning exercises, in both exercise selection and in set and rep schemes. Below are 3 example mini arm workouts you can add onto your routine over the course of a week.

Arm Workout 1

Barbell Curls 4x8

The classic bicep building exercise, the key is to keep your elbows in front of your body in order to place most of the strain directly on your biceps. Use an E-Z bar to reduce wrist strain if that’s an issue you encounter.

Decline Close Grip Bench Press 4x8

Two variations include performing this exercise on a flat bench with a smith machine, and using a Slingshot. The smith machine takes the small shoulder stabilizers out of the exercise, allowing the triceps to be focused on easier this way. The slingshot helps to reduce the weight of the bar off of the chest, therefore reducing the activation of the chest and placing it onto the triceps.

Behind the Back Barbell Wrist Curls 4x10

With arms behind the back, it’s really easy to activate the forearms. Don’t count reps until your forearms are already burning, and then push through the pain. Use short rest periods for this exercise.

Arm Workout 2

DB Zotterman Curls 4x12

Zotterman Curls are one of my favorite bicep exercises, very similar to hammer curls in the muscles they target. The zotterman curl brings the arm across the body, and by doing so you’re able to contract the top of the movement better than a hammer curl due to a move protected shoulder joint position. You’ll have to alternate reps here, so it makes for a good finisher when the biceps and forearms are already fatigued.

Overhead DB Tricep Extension 4x12

The Overhead Dumbbell Tricep Extension is a classic tricep exercise, and one that’s easily performed at any gym. Standing or seated, I like this exercise less for the contraction at the top and more for the deep stretch I can achieve on my triceps at the bottom. Sink into that stretch, feel your triceps, and then use your triceps to drive the weight upwards.

Reverse DB Curls 4x20

Reverse Dumbbell Curls are a very flexible exercise, and they can be performed from heavy to very light with a variety of reversed grip positions.

Arm Workout 3

Bicep Preacher Curl Machine 4x15

I like to use machines every once in a while as a way to take the stabilizer muscles out of the movement in order to fully target the desired muscle, in this case the biceps. I like to hold the stretch, the contraction, and keep the MMC my focus during the movement itself.

Tricep Extension Machine 4x15

Same concept as above with the Triceps Extension Machine. I find it difficult to contract the triceps compared to stretching the muscle (both can help grow a muscle), and this machine makes it really easy to get an amazing contraction on your entire tricep muscle. Hold the contraction and use a slow controlled tempo in-between.

Plate Pinches 4x Hold As Long As Possible

Plate Pinches are a semi-unconventional grip exercise, but one that is easily performed at any gym. The two ways to perform this exercise is to to pick up a single 25 - 45 pound plate and hold for as long as possible, or increase the width of the pinch by stacking 10 pound plates together. Both methods improve grip strength.

GROW BIG ARMS

Follow this routine diligently for 30 days and I can guarantee you’ll see noticeable hypertrophy results. In fact, if you have the advantage of having a shorter wingspan with long muscle bellies, you’ll see even better results than I did! If you follow this routine, please share your results via the comments below.

Cistanche Provides and Extra Edge

And if you’re looking for an extra edge in building muscle, getting stronger, and leaning out I recommend you research into the herb cistanche. I used cistanche to boost my free testosterone levels by 53% in just thirty days, it’s one of the only proven testosterone boosting herbs that exists. Nootropics Depot sells cistanche powder with a high level of standardization.

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