Do I Need Electrolytes If I’m Not a Marathoner — and When Do They Do More Harm Than Good?
Do I need electrolytes, you may wonder, when everyone from fitness influencers to office workers seems to be drinking them? Let’s figure out who really needs a packet in their water bottle, when plain water is enough, and why extra salts can work against you.
A packet in your water bottle, and you feel like an athlete. Over the past year, electrolytes have gone from a marathoner’s drink to a trendy daily ritual: on social media people stir them into water every morning and take them to the office and on flights, and Google search interest has grown noticeably in the US and in many other countries. So do I need electrolytes — really — if I work out for an hour at the gym or spend the day at a desk? The inconvenient truth: most people do fine with plain water and food, and an extra dose of salts can work against you.
What do electrolytes do in the body?
Electrolytes are minerals with an electrical charge: sodium, potassium, magnesium. According to Cleveland Clinic, they maintain fluid balance, help turn nutrients into energy and support brain function, heart rhythm and muscle contraction.
The body truly can’t work without them. But that doesn’t mean you need to drink them from a packet. Electrolytes are found in a great many foods — especially vegetables and fruit, and most of us already get even more sodium than we need from ordinary food.
Do I need electrolytes if I’m not a marathoner?
Most often, no. For moderate exercise up to an hour in normal conditions, water is enough to replace fluids. An expert quoted by the American Heart Association names a threshold of 75 minutes: if a workout is shorter and not very intense, extra electrolytes aren’t needed.
According to Cleveland Clinic, an electrolyte drink really does make sense in these situations:
- exercise longer than an hour or at very high intensity;
- training or working outdoors in extreme heat;
- you’re a naturally heavy sweater — you can tell by a soaked-through T-shirt with white salt streaks on it;
- an illness with fluid loss — in that case, choose an option with minimal sugar.
So you don’t have to guess, the PDF for this article includes a daily water and salts calculator: you note your activity, the heat and how you feel — and see whether water is enough today or whether it’s worth thinking about salts. It also has homemade drink recipes without added sugar.