When the weather gets hot, even a simple walk can feel harder than usual.

You may notice that your heart beats faster, you sweat more or you get tired sooner. That’s because your body has to keep you cool while also supporting your muscles.

As you exercise, your heart rate naturally increases and your blood vessels widen to improve blood flow, pumping oxygen-rich blood to your muscles so they can move and function properly.

But when you add heat and humidity into the mix, your heart has even more work to do.

These tips help keep you safer.