Sit-ups on the waist and abdomen are ok for most people. 2-3 groups at a time, I feel

abdominal muscle

Stop when acid and numbness are weak, even the next day.

muscle

yearn for

And don't stop.

correct

lower limbs

,

keep patience

Just jogging, variable speed running ... if you can walk, don't walk if you can't.

Explosive power,

shank

Heel lift (heel lift),

thigh

.. you can leapfrog, squat, or hang a mat on the wall and punch straight, and you can practice your thighs, waist and arms.

This is only amateur opinion, and it is best to consult a professional.