There's a popular saying among fitness experts: "The best exercise is the one you're not doing." The take-home message? To achieve the best results, you need to regularly challenge your body in new ways. So while classic movements like the pushup, lunge, and squat are the staples of any good workout plan, varying the way you perform these exercises every 4 weeks can help you avoid plateaus, beat boredom and speed fat loss.
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