He should lighten up his exercise just a bit to ensure he is not overloading his heart.
Noncommunicable disease in correct.
Flexibility is defined as the range of motion of the joints of our body and mobility of muscles.
Since everything is “lighter” in space due to the lack of gravity, you don’t need as much strength to do things so your muscles begin to deteriorate and weaken because you aren’t maintaining your strength.
If a person really wants to achieve a goal such as this one then a person must be dedicated and determined into reaching this goal. In this case, Isaac should train more and play less. It is not going to hurt Isaac one bit staying off the video games or reducing play time for awhile. Responsibilities come first I always believed in work hard first...play hard later.