People who are weak should take their time. Keep fit for a long time.

I suggest you don't practice dumbbells and lift weights.

You should do more aerobic exercise: running and swimming are good.

These can increase lung capacity, which is especially good for the heart.

But we must insist. It is best to do it 4-5 days a week. Time should also be lengthened.

You can start by jogging for 20 minutes every day.

Slowly, the speed, time and times should be increased.