Year 4 have been investigating the science behind exercise this week.We wanted to find out what happened to our heart beat or pulse rate when we exercised.
We started by sitting quietly and taking our resting pulse. Then we ran around the playground for 2 minutes. We got hot and breathless, but it was fun!
Immediately after we had finished, we measured our pulse rate again. It had gone up. It was much faster!
We came back instide and got on with our work, but stopped to again measure our pulse rate every 5 minutes.
Our pulse rate gradually slowed down over the next 20 minutes. By then it had returned to its normal resting rate.
The table shows you how Muhammed's pulse rate dropped.
We learned that our pulse rate increases when we exercise, but falls again slowly when we stop.
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