24/10/2026
Your brain is roughly 75% water, so it notices when you’re running low, often before you feel thirsty.
Research suggests that losing just 1–2% of your body’s water can affect focus, short-term memory, mood and energy. That’s easy to hit on a busy day, a hot commute or after a workout.
The fix is simple: sip consistently, keep a bottle in sight, top up when it’s hot or you’re training, and make water something you actually want to drink.
That’s where air up comes in. Plain water, with a hint of flavour from natural scent. No sugar. No artificials. Just water.
Save this for later and send it to someone who forgets to drink water.
Comment HYDRATE and we’ll send you how air up works.
Sources: Armstrong et al., Journal of Nutrition (2012); Ganio et al., British Journal of Nutrition (2011); Pross et al., Physiology & Behavior (2014)
