Let’s first tackle this notion of lifting “heavy.”
Throughout the article “heavy” with be classified as lifting challenging weights in the 5-8 rep range. Challenging means a weight that allows you to complete 5-8 reps with perfect form with only a couple reps left in the tank, but no more. For instance, if you are to perform a set of 8 reps, you should use your 10-rep maximum – a weight you could perform for 10 reps but no more.
That is what we mean by heavy, challenging weights. Now that we’ve cleared that up, let’s move on.