Hehe, just kidding. The following possibilities (1) are all over 70 years old.

(2) Extremely weak or suffering from serious diseases.

(3) lack of exercise all the year round

If it belongs to the first kind of normal, the second kind should go to the hospital above the municipal level to check the liver function and kidney function.

Third, because I don't know your gender. It is suggested that exercise should focus on running three times a week to train cardiopulmonary function, and insist on 15 minutes each time. 1 month later, strength training should be appropriately increased to prevent muscle atrophy and cardiopulmonary function decline caused by long-term inactivity. The intensity of female words is appropriately reduced.

I'm a coach. I hope I can help you.