Answer:
The answer is Gymnastics.
Step-by-step explanation:
Gymnastics is a physical activity aimed at strengthening and maintaining physical fitness through a set of established exercises. Gymnasts use all the muscles of the bodies. The abdominal and pelvic muscles are used in every movement a gymnast makes; The muscles of the arms, chest and back work together to help and oppose each other, the forearms and neck muscles also play an important role and during the jumps work the buttocks and all the leg muscles.
In conclusion, gymnastics would be the ideal exercise for Paul to increase his muscular fitness.