Let me simply add a few words: the vitamins you listed are harmless when mixed. Vb is a family of vitamins, including b 1, b2, b6, B 12, folic acid, etc. They have an influence on each other and need to be eaten in a certain proportion. The recommended vitamin B contains the above. Eating only one kind is not recommended unless you know exactly which one is missing.
Vc, VE and VA are all antioxidants, so it is suggested to supplement Vc appropriately, especially for people who exercise heavily. However, VE and VA, as fat-soluble vitamins, cannot be taken in large doses for a long time.
The general suggestion is: Try to get related vitamins and minerals from natural foods, as well as some' nutrients' necessary for fitness, such as protein.
The purpose of fitness must be clear, don't exercise for the sake of fitness or blindly practice for the sake of big muscles. Remember that health is the most important thing.