Don’t worry about your heart rate if this is the first time. Whether in a long time or ever, you’ve started an exercise program. The most important thing is just to do it. If you feel you’d like to push yourself a bit after the first couple of weeks, increase the intensity by adding resistance or going faster after 5-7 minute warm-up. Make sure you cool down at the end of every cardio session, and stretch out the legs so that you don’t feel as sore the next day.
Jogging (outdoor or treadmill)
Funk Roberts -Don't Rush the Beat