Is fitness a big load on the heart? Will it do harm to the heart?

Whether it is harmful to the heart depends on the amplitude of the heartbeat ~ and it is also divided into age groups.

The effective fat-reducing aerobic exercise before the age of 35 is about 135 to 185.

If you do strenuous exercise, your heart rate will be above 200 and keep it for a long time, which will cause heart overload.

I hope it helps you.