What kind of muscles are you trying to build? When celebrity fitness trainer Joel Harper dropped by Mondays With Marlo this week, he said that if you're looking for bigger muscles, you'll need to lift heavier weights. For long, lean muscles, you want to use light weights, high reps. Pick a goal and stick with it!
Click here to watch the full video.
And for more advice on getting fit, see Joel's top tips:
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