Albert recently had knee surgery now albert must make physical therapy a part of his routine so that
he does not gain weight
his muscles grow faster
his leg bones grow faster
his muscles do not atrophy

Albert must have physical therapy after knee surgery so that...

    His muscles do not atrophy

Atrophy is the wasting away of the muscles in the body or the decay due to the lack of use. Therefore, Albert needs therapy so that he works the muscle and builds it back up from the surgery in order to prevent the potential that his muscle wastes away preventing him from walking or even using that knee ever again.

cheetos? that's the answer? ?

exercising at a moderate intensity, and slowly increasing the duration.