Weight depends on one's physique. If you can push 10 to 15 times, you can reach a higher degree of fatigue. (The times indicated in the supplementary bodybuilding book are 10- 15. If you can reduce your endurance to 5kg, you can do it 50 times. You can rest within 3 minutes at first, rest after repeating 3-5 groups of oleic acid swelling of pectoralis major, and gradually gain weight later.