The result is still inseparable from running/cycling/swimming+dumbbells ... it should become stronger.

The child is thin because of his bad spleen and stomach. Suggestion: It is recommended to eat more black sesame seeds, lotus seeds, yam and other foods at ordinary times, which has the effect of strengthening the spleen.

Thin people become strong through exercise and fitness. A coach told me, first, to adopt the correct exercise method; Second, we must supplement nutrition; Third, we should keep a good attitude and sleep.