Observations and results
Did the heart rate quickly drop after exercise ceased and then start to level out as it approached its resting rate? Did it reach the resting rate after one to seven or more minutes when exercising stopped?
Immediately after exercising, the heart’s rate was likely in the upper end of its target heart-rate zone. As soon as resting started, its rate should have quickly decreased. Specifically, one minute after rest started the heart rate likely rapidly dropped. After that, it likely continued to drop, but much more slowly as it approached its resting rate over the following minutes. It may have taken about one to seven or more minutes (after exercise stopped) for the heart to resume its resting rate. Generally, the faster a person's heart rate recovers, or reaches its resting rate, the better shape he or she is in.
More to explore
Improve Heart Health by Knowing Your Recovery Heart Rate, from Hannah Kitzmiller, Enhanced Medical Care
American Heart Association Recommendations for Physical Activity in Adults, from the American Heart Association
Heart-Rate Recovery Immediately after Exercise as a Predictor of Mortality, from Christopher R. Cole et al., The New England Journal of Medicine
Fun, Science Activities for You and Your Family, from Science Buddies
Heart-Rate Recovery Times, from Science Buddies
Secrets of the Universe: Past, Present, FutureX