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
You should train with weights at least three times per week, up to even six times if you can recover from it and still make progress. If you are training for a specific sport, how many cardio sessions you need will depend greatly on the cardiovascular and muscle mass and strength requirements of your sport.