Brass and bronze, an alloy made from copper and tin, have been made for thousands of years, although brass was often made by accident. Early intentional brass was actually made with calamine, a mineral which contains zinc.
As I mentioned, you should strive to lift weights 3 times a week, but if you can only make it twice, you will still get most of the benefits. 4 1. Full-Body Workouts
According to strength and conditioning specialist Keith E. Cinea, you should allow your muscles 48 to 72 hours of rest in between workouts. Workouts per Week To allow for 48 to 72 hours of rest, you should work your muscles two to three days per week.