Planning on spending time outdoors? Make sure to pack plenty of water. When the mercury rises, staying hydrated is especially important. Oftentimes we become overheated before realizing it.

Making up for more than half of our weight, water is constantly making its way through our bodies. We tend to lose water even faster during physical activity and when it's hot outside.

There are four great reasons to stay hydrated: it boosts brainpower, helps maintain the balance of body fluids, protects vital organs and helps with digestion.

Beginning signs of dehydration include increased sweating, thirst, dizziness or headaches. In those cases, find shade, rehydrate, relax and give your body time to recuperate.

More serious signs of dehydration include losing balance, not sweating at all, vomiting or not feeling like yourself. In those cases, its a good idea to seek medical attention.

A tip to keep in mind is to keep a water bottle on hand throughout the day, as you'll be more likely to drink water if it's readily available. Be sure to drink water before, during and after physical activity or time spent outside.