Are you sure he's exercising?
 
First of all, you have to create an exercise schedule so that you can make it a part of your daily routine. It really depends on how frequently you want to do your workout routines. You gotta have the discipline to follow through with your plans to achieve your goal.
 
I find videos from Workouts on Demand suitable for me. You can check it out Exercise Video Downloads: Perfect for busy women -- Workouts On Demand and see if that works for you as well.  
 
And remember if you’re a beginner don’t over exert yourself to prevent injuries. Let your breathing be your guide. If you’re out of breath, you’re over doing it. Results may take a while, but you’re working out not having surgery, okay?  
 
Good luck on finding the right stuff that suits you.