Reduce Stress - Get your Zzzz's, eat healthy and exercise!
Train the Heart - Get your cardio exercise most days of the week for at least 30 minutes. Get Sweaty and have a bit of labored breath is a pretty good guage for being within the necessary range of work. For the average adult calculate the range by :
(220 - age) x 70% = X
(220 - age) x 85% = Y
The heart rate you want to maintain for 30-60 minutes is between X and Y.
Resting Heart Rate (RHR) Know your RHR. Take your heart rate when you're most relaxed (preferably after a good nights sleep). Measure the number of beats in 10 seconds, then multiply by six. Your number should be between 60 and 80--even lower if you're athletic. The more you train your heart with exercise and a good diet, the lower your RHR will be.
Waist-to-Hip ratio This is often used as a predictor of heart attacks. Divide your waist measurement by your hip measurement: a ratio of more than 0.8 indicates an increased risk of diabetes and heart disease because of fat distribution.