How fitness and metabolism change in your 30s vs. your 20s


This is something that I’ve occasionally been pondering: how fitness and metabolism change as we age. I feel like it’s so common to hear friends say that they used to be able to eat anything, but now they have to watch their food intake. Or, they feel like they have to work harder at the… The post How fitness and metabolism change in your 30s vs. your 20s appeared first on The Fitnessista .
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