9 Ways to Tell If You’re Exercising Enough

What it means: "This happens when your body gets comfortable with your routine," says Erin Bulvanoski, a trainer at Kore in New York City. You might be sticking to the same workouts or the same amount of weight, and you really need to be mixing it up.

How to adjust: Once a week, grab heavier weights. Adding more HIIT exercises can help as well, says Bulvanoski.

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