Start by walking for 2 to 5 minutes at a time, 2 or 3 times each day.
2 to 3 days each week do strengthening exercises:
Shallow knee bends
Arm raises overhead.
Elbow curls with soup cans.
Start with 8 to 10 repetitions of each exercise.
Add 1 to 2 minutes to your walk each week.
Add one or two strength training exercises each week.
Once you can do the full strength training routine for 10 to 15 repetitions for each exercise gradually add more resistance.