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This is the final video of my 3Part Forearm Series!
Part 1 (Brachioradialis)    • The 2 ScienceBased KEYS to Building ...  
Part 2 (Forearm Extensors)    • How to Build EVERY FOREARM EXTENSOR i...  

Key Timestamps:
0:00 Intro & Overview
0:19 5 Reasons to Work Your Forearm Flexors
1:22 Why Grip Work Isn't Enough!
2:15 Exercise Demo Cable Version Phase 1
3:01 Exercise Demo Cable Version Phase 2
3:53 Exercise Demo Cable Version 2XFailure Finisher
4:17 Exercise Demo Dumbbell Version Phase 1
4:33 Exercise Demo Dumbbell Version Phase 2
4:40 Exercise Demo Dumbbell Version 2XFailure Finisher
5:18 Exercise Anatomy Finger Flexors
7:14 Exercise Anatomy Wrist Flexors
7:28 The Palmaris Longus Test
8:30 Exercise Anatomy 3 Benefits From Adding Adduction
10:00 Forearm Series Summary & Total Forearm Program
10:46 FitnessTip Friday & More Resources

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The forearm flexors are a group of 8 muscles located on the anterior or underside of the forearm, and they can be split into two groups the finger flexors, and the wrist flexors. They’re an EXTREMELY important muscle group to work here are 5 of the top reasons why:

1) The forearm flexors make up the majority of the entire forearm, and make you look ripped when they’re built! 2) Developed forearm flexors give you a strong, firm handshake, which subconsciously conveys strength, confidence, and reliability. 3) They’re the single most used skeletal muscle group in modern society. 4) Every pull exercise that exists relies on your grip strength, and 80% of your grip strength comes from the forearm flexors (with the rest coming from the forearm extensors which I covered in a previous video). So how well you can work a HUGE portion of your body is limited by the strength of your forearm flexors! 5) Due to a principle called muscular irradiation, the stronger your forearm flexors are, the better you’ll be able to work your upper arm muscles, including the biceps, triceps, and deltoids.

But, aren’t they getting worked enough by gripping weights in those pull exercises? No! 1) In all those exercises the forearms are only being worked isometrically which means the muscle fibers aren’t stretching and shortening or moving the load at all, and isometric contractions are the least effective of the 3 types concentric, eccentric, and isometric for stimulating muscle growth. 2) Grip work only engages the finger flexors, and doesn’t work the wrist flexors at all, which make up half of the forearm flexors as a whole!

So you need to incorporate exercises where the forearm flexors are being isolated via direct concentric and eccentric contractions, and that target both the finger flexors and wrist flexors.

And here’s the multiphase workout technique I developed for building all 8 forearm flexors as effectively as possible!

The first phase of this exercise targets the finger flexors by adding resistance to your fingertips. Those are the:

Abductor Pollicis Longus
Flexor Carpi Ulnaris
Palmaris Longus
Flexor Carpi Radialis

It’s extremely important here that you let the weight drop down all the way to your fingertips. From there, you’ll move into the second phase, which targets the wrist flexors:

Abductor Pollicis Longus
Flexor Carpi Ulnaris
Palmaris Longus
Flexor Carpi Radialis

You’ll start by flexing your wrist as far as you can while simultaneously adducting it, or rotating it slightly in, then slowly let the cable pull your wrist back to the starting position and repeat.

In the first position, the point of maximum resistance on the wrist flexors is between a hyperextended position and a neutral position, and works all the forearm flexors closer to their points of max extension. Rotating between the two different angles of resistance will maximize balanced muscle growth due to the principle of regionspecific hypertrophy!