Exercise guide
Seated Fist Pulse
- Beginner
- Isolation
- Rep-based
- Shoulders
- Upper arms
This isolation exercise targets the forearm flexors and extensors through high-frequency, small-range pulses, making it excellent for building grip endurance and a significant muscle pump.
Reviewed by the Crucible team · Updated June 2026
Muscles worked
Setup
- Sit on the edge of a flat bench with your feet flat on the floor, shoulder-width apart.
- Lean forward slightly and rest your forearms firmly on your thighs, allowing your wrists to hang just past your knees.
- Clench your hands into tight, firm fists with your palms facing upward.
How to do it
- Rapidly pulse your fists upward toward your forearms in a small, controlled range of motion of approximately one to two inches.
- Maintain a fast, consistent tempo throughout the set, focusing on high repetitions rather than a full range of motion.
- Breathe naturally and rhythmically, ensuring you do not hold your breath as the muscular burn increases.
Form checklist
- Keep your forearms glued to your thighs to prevent the elbows from lifting.
- Maintain a tight clench in your fists throughout the entire duration of the set.
- Ensure the movement comes strictly from the wrists, not the shoulders or arms.
- Keep the pulses short and rhythmic to maintain constant tension on the forearms.
Pro tips
- Squeeze your fists as hard as possible to maximize recruitment of the deep forearm stabilizers and increase the intensity of the pump.
- Vary your wrist angle by rotating to a neutral position (palms facing each other) to target the brachioradialis.
Make it harder
- Perform the movement for a set time duration, such as 60 seconds, to push past the lactic acid threshold.
- Add a 10-second maximal isometric squeeze at the top of the final pulse to fully exhaust the muscle fibers.
Frequently asked
- What muscles does the seated fist pulse work?
- The seated fist pulse primarily targets the forearms, and also works the biceps as secondary muscles.
- What equipment do you need for the seated fist pulse?
- The seated fist pulse requires no equipment — just your body weight.
- Is the seated fist pulse good for beginners?
- Yes. The seated fist pulse is a beginner-friendly movement and a strong foundation to build on.