Why am I so tired? Sleep and weight
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3. Are you overweight?
Being overweight or obese means that your body has to work a lot harder to do everyday jobs. Putting pressure on your heart means that it can't pump blood around your body as quickly and that lowers your energy levels.
It also means your body isn't as fast at regulating your sugar levels or releasing hormones so you feel sluggish and tired all day.
- Find out more about obesity
- If you want to lose weight, see what your perfect diet is
Read on: Why can heavy periods make you feel tired?
By Vicky Woollaston
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Where to next?
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How lack of sleep affects your body: Part 2
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How to beat insomnia
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Things that can save your life: Sex and a mirror
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Top 10 health tips for Christmas - No 5
