1 the pull-up preparation posture cannot be completed, and the endurance of the forearm can only be suspended.
2. Tie a heavy object in the middle of the round stick by winding method (weight optional). Hold both ends with both hands and roll up and down (push hard) with wrists as a group.
3 Grasping basic skills take ordinary bricks as the starting weight, and five fingers are lifted (only the front ends of five fingers are used for grasping). Later, you can grasp heavy objects with each finger (similar to grip).
Forearm is the source of grip strength, and the most basic labor actions are holding an axe, cutting trees, holding a hammer, forging and so on.
Forearm and five fingers are a whole, so it is suggested to practice the strength of fingers (bone density, knuckle ligament) while practicing forearm. The most basic thing is push-ups.