After all, relaxing in the sun takes no effort at all.

Heat causes many chain reactions to cool your body down, including vasodilation and perspiration.

Unsurprisingly, both of these processes take up a lot of energy and can leave you feeling pretty fatigued.

Woman sunbathing

Always remember towear sunscreenand keep in the shade as much as possible.

Woman cooling down with fan

Woman listening to music on a beach