I'm looking to build muscle; do I have to lift heavy?

If you're struggling to get to grips with the barbell, then have no fear: deadlifting your own weight in cold, hard iron may not be necessary!! Research by Lehman College in New York suggests lifting lighter weights for more reps can be just as effective as doing fewer heavier reps.

Study author Dr Brad Schoenfeld says: "Training a muscle at, or near, fatigue causes an adaptive response that favours growth and strength. Heavier loads appear to maximise the strength response while lower-load training leads to greater improvements in muscular endurance."