Medical consultaion with your M.D. is recommended with any exercise program.
After your 10 minute warm up, seek a peak effort within the next ten minutes. Do this once a week. If you are engaged in multiple exercises, anerobic components of cross training or weight lifting for example, seek those peaks in only one or two exercises a week. Tri-athletes should look for a peak in only one of their disciplines per week, as an example.
Enjoy your active lifestyle!
Your Personal Trainer,
Edward Troy