I've been back to using weight machines for about 13 months or so. Steadily I kept increasing the weight. I made a mistake, was on vacation for three weeks and then had compnay for the next two - stupidly when I went back to the gym I used the same weights I had been doing and now my right rotator cuff is hurting. I asked the trainer at the Y, and she told me all along I should have been using light weights and more reps as opposed to trying to add more weight, to make long and leaner muscles instead of bulking up.
Is this true, do you agree with her? I am 55, and want to lose a lot more weight. I thought the more muscles you had the more calories you burn? I actually like the way my arms look, for the first time in decades, plus I want to be able to hoist myself out of the tub when I'm older etc.
Advice please?