So you’re entering the final few miles of your marathon and sweating buckets, or you’re grinding down to the last few minutes of your daily spin bike workout. When you need fluid replacement, your first impulse will most likely be to gulp down as much refreshing water as you possibly can.
But what drinking all this pure water could potentially be doing is more harm than good when it comes to the balance in your body. What drinking water does is it dilutes the sodium levels in your system. So …