Get a complete medical examination.
Discuss with your doctor what your limits are so you do not overexert yourself.
Go for a walk every morning.
Walk for at least 30 minutes.
Join a gym and pay for a year’s subscription.
Schedule at least five one-hour sessions per week. Hire a personal trainer if you need to.
Buy a treadmill and set it in front of your TV.
Watch TV while you exercise so you don’t get bored.