What does ‘fitness’ mean and why does it matter?

What does ‘fitness’ mean and why does it matter?

Many people say they want to get fit, but what does this actually mean? Fit for what? The websites of leading fitness trackers, like Apple Watch, Fitbit, Microsoft Band and Jawbone Up don’t shed much light on this question. They talk<span class="ellipsis">…</span><div class="read-more">Read more ›</div><img width='1' height='1' src='

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