Running to Increase Testosterone Naturally by: Lee
Running is a better testosterone booster. Why is this important? Science shows the hormone testosterone will significantly help you build muscle and lose fat...
And the best part?
Testosterone can be triggered naturally with anaerobic training such as weight lifting and intense cardio like sprinting.
While swimming undoubtedly provides excellent aerobic benefits, it will do little to increase testosterone - a primary target if you are looking to gain muscle and get lean.