From the Lab

Forearms Training for the Slim Woman: 135–160 lbs, Recomp Phase

Name: XPERFORMANCELAB
Rating: 5.0

          May 28, 2026
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          By Xavier Savage
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          Slim
        

Forearms Training for the Slim Woman: 135–160 lbs, Recomp Phase

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If you are a woman at 135 to 160 pounds whose grip consistently fails before the target muscle does during back and bicep work, your forearms are the weak link in your pulling chain and they are limiting results you are not even getting.

I’m Xavier Savage, a personal trainer based in Houston, Texas. Most women in the Slim archetype have never deliberately trained their forearms. They did not even know it was a category. I work with women at your exact stage through XPL online training across the US, Canada, and the UK, and grip and forearm strength is consistently the first thing that improves training quality across every other upper body exercise when it is addressed directly.

Forearm training serves two purposes for the Slim archetype: functional – improving grip for all pulling movements – and aesthetic – creating the defined, muscular appearance of the forearm and lower arm that is visible in every T‑shirt and tank top. Both matter. Both are achievable at your weight range within eight to twelve weeks of direct training.

Forearm Anatomy

The forearm contains two primary muscle groups on opposite sides of the lower arm. The wrist flexors on the underside of your forearm control gripping (the squeezing motion) and wrist flexion (bending your wrist toward your palm). They are the primary muscles responsible for grip strength and are trained by wrist curl exercises and by any pulling movement.

The wrist extensors on the top of your forearm control wrist extension (bending your wrist toward the back of your hand). They are frequently neglected, and their weakness produces the muscle imbalance that leads to forearm pain and elbow issues in women who train pulling movements without proportional extensor work.

The brachioradialis runs from your forearm up to just above your elbow and creates the thick, defined upper forearm visible from the front. It is trained most effectively by neutral‑ and reverse‑grip curling movements – hammer curls hit it directly.

The Exact Forearms Protocol

Exercise 1: Wrist Curl (Dumbbell)

Sit on a bench with your forearms resting on your thighs, palms up, a dumbbell in each hand. Lower the dumbbells by relaxing your grip and allowing your wrists to extend downward. Then curl your wrists upward toward your forearms as far as possible. The movement is entirely at the wrist – your forearms do not move off your thighs.

Sets: 3. Reps: 20. Rest: 45 seconds. Starting weight: 10‑12 pounds. Progressive overload: add 2 pounds when all 3 sets of 20 are completed. Common mistake: too much wrist extension at the bottom – control the descent.

Exercise 2: Reverse Wrist Curl

Same position as wrist curl but palms face down. Lift the back of your hands upward by extending your wrists. This trains the wrist extensors.

Sets: 3. Reps: 15. Rest: 45 seconds. Starting weight: 5‑8 pounds – the extensors are weaker than flexors. Common mistake: using shoulder movement to help – isolate at the wrist.

Exercise 3: Dead Hang

Hang from a pull‑up bar with both hands, arms fully extended, for as long as possible. This is pure grip endurance and finger flexor training. Record your hang time each session.

Sets: 3 attempts. Time: to failure. Rest: 90 seconds. Progressive overload: when you reach 60 seconds per hang, add a 5‑pound dumbbell between your feet. This exercise builds the grip strength that allows your back and bicep work to progress without being grip‑limited.

Timeline

Week 4: Grip no longer fails before the target muscle during back training.

Week 8: Visible forearm definition in relaxed position.

For complete arm development, pair this with the biceps protocol. Confirm your archetype with the XPL Archetype Quiz.

I train clients in person in Houston, Texas and work with people across the US, Canada, and the UK online through XPL. Take the XPL Archetype Quiz to get your exact protocol, or visit xperformancelab.com/plans-pricing to work with me directly.

The standards behind the standards. — Xavier Savage, XPL Xesthetic Performance Labs, Houston, TX