workout can actually let you keep fit. it help maintain the physique. 
yeah it also helps with your mental health its a good way to stay healthy all around
especially if you're practicing yoga. it a meditation challenge. 
yoga is one of the oldest available exercies as well. 
exactly. Yoga help fight stress and anxiety. you can try jogging. 
jogging always helps after I have a rough day, it clears your mind as well as helps you break a sweat.
Yes, if you can jogging for 45mins, and it uses oxygen heavily and help circulate the blood. 
jogging also helps to build strong bones, and also improves your cardiovascular fitness.
of course. that's why most athletes have a very strong bone and look healthy always. 
you also sleep better as well as opposed to not working out at all.