how are physical workout helpful?

Answer 1

http://www.google.com/search?q=benefits+of+physical+workouts&rls=com.microsoft:en-us:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7GGIE_en

Answer 2

because it keeps your body in shape and gives the energy you need to keep doing them