“Sept. 14, 2004 â€” It might be time for workout warriors to stack a couple more weight plates onto the pile. A recent study showed that many inexperienced weightlifters don’t come close to pumping enough iron to change the shape of their muscles, or really get any benefit at all.
The study, done by exercise physiology professor Stephen Glass of Grand Valley State University in Michigan, was based in part on previous research that said people must lift no less than 60 percent of the maximum weight they can lift to increase the size of their muscles.”
I still love lifting, there is nothing like a good burn to make you feel good.