2. 1 2 hours can start, and it can become 3 to 4 hours after a while. . But it is best not to exercise for a long time, mainly in small amounts and many times.

3. Mainly the upper body, chest muscles and biceps brachii can make people look strong. . . The pectoral muscles are mainly birds. . lift the dumbbell

4. After fitness

5. no need. . Just eat more eggs. save

6. Theoretically, anaerobic activities in the gym will not increase vital capacity. . But it will be indirectly enhanced.

7. Be single-minded when practicing. . . You should pay attention to your diet. Look for some information and visit the fitness bar.