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
That means you go a long time between workouts for a particular muscle group. If you can only lift weights three times per week, try switching to full-body workouts where you work the entire body in each session. This way, youâll hit each muscle three times per week. Perform two to three sets per muscle group.