Explanation:
The muscles opposing the movement become the antagonists.
In a movement, like the back extension, the muscles that extend the back are the agonist.
The muscles that produce the opposite movement, which is back flexion, are the abdominals.
3-5 times a week for athletic improvement, 2-3 times a week to maintain fitness
They could set up a fundraiser, or an awareness campaign in order to inform the public about the disease. (something similar to the Ice Bucket Challenge)
I hope this helps! :)
