Hydration
Hydration is mostly a habit problem, not a “perfect formula” problem. Start by removing friction: a bottle you like, visible water, and a simple cue.
Last updated: February 13, 2026
Hydration — habits first, electrolytes only when they help
Hydration is a behaviour. Most of the benefit comes from making water easier to drink consistently.
Electrolytes can help on sweaty training days — but they aren’t necessary for everyone, every day.
Educational information only — not medical advice. If symptoms are severe, persistent, or worrying, use NHS guidance or speak to a clinician.
Why it matters
- Dehydration can affect energy, mood, and physical performance.
- For active people, replacing fluids (and sometimes sodium) supports training quality and recovery.
Common causes
- Busy days without a “water cue” (no bottle / no routine).
- Hot rooms, sauna, or high‑sweat training without planning.
- High caffeine intake without matching fluid intake.
Quick check at home
- Use a bottle you like and refill it twice per day for 1–2 weeks.
- If you train, weigh yourself before/after a hard session (fluid losses show up quickly).
How it can affect health
- Mild dehydration can cause headaches, fatigue, and reduced concentration.
- Over‑drinking plain water without electrolytes can be an issue in rare cases during very long endurance sessions.
First steps (no spend)
- Make water automatic: drink on waking, with meals, and after training.
- Use flavour (lemon, cordial) if it increases intake.
- For sweaty sessions: salt your meals and consider electrolytes when needed.
- If you have symptoms of severe dehydration, confusion, or feel very unwell, seek medical help.
At a glance
Start here (no spend)
- Add one visible water cue (on desk / by kettle).
- Drink a glass after waking and with meals.
- Match intake to activity (more on training days).
Training days
- If you sweat a lot, consider electrolytes for longer sessions.
- Salt + normal meals often cover many people.
- Avoid “stacking” lots of drinks with sugar/caffeine.
Common mistakes
- Buying lots of hydration products but not fixing the habit.
- Drinking too much too late → night waking.
- Ignoring sleep (dehydration-like fatigue is common after poor sleep).
Options (compare links)
If you want to reduce friction, compare a couple of simple tools you’ll actually use.
Stainless steel bottle (750ml)
HabitA bottle you like (and will clean) is often the biggest win.
- Wide mouth is easier to clean
- Leakproof lid matters
- Dishwasher-safe helps
Electrolyte mix (training days)
SweatUseful for longer/hot sessions. Compare sodium content and ingredients.
- Check sodium per serving
- Avoid turning into an all-day habit
- Keep it simple
Water bottle brush
MaintenanceKeeps bottles usable long-term (and reduces the “I stopped because it got gross” problem).
- Bottle + straw brush combo
- Let it dry fully
Insulated tumbler (desk)
Visible cueIf you work at a desk, a cup that stays cold/hot can make intake effortless.
- Fits your desk/cup holder
- Easy to clean
- Use it as a cue
Common questions
Short answers to the questions that come up most often.
How do I know if I’m drinking enough?
A practical check: your urine is generally pale straw coloured (not perfectly clear all day).
If you train hard, sweat a lot, or it’s hot, you may need more fluids — and sometimes electrolytes.
Do I need electrolytes?
Often only for longer/sweatier sessions, hot days, or if you cramp easily. For many people, water plus normal meals is enough.
If you do use them, check sodium content and avoid turning them into an “all day” habit unless you have a clear reason.
Is drinking loads of water always good?
More isn’t always better. Over‑drinking can cause problems in rare cases. Aim for steady intake, and match fluids to your activity level.
Does caffeine dehydrate you?
In normal amounts, caffeinated drinks still count towards fluid intake for most people. Sensitivity varies, and late caffeine can hurt sleep.
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