what is the required ....

[cyber]

what is the required anount of training required for a 21 yr old man...1hour ...i want to know ..just to keep fit and have strong muscles...

 

[Arnold]

work-out 3 days per week, one hour sessions.

 

[Scotty the Body]

I don't know that there are any set gidelines for this, it would depend on what your daily activities are as well. Do you have a sit down job or are you in construction etc.
Some people may not need to go to a gym to keep fit but for people like me that don't get much activity through a normal day need to go to the gym 3 or more times a week to keep in good physical shape.

 

[the ripper]

4 days is just enough 4 me