Hydration and Injury.

With the recent heatwaves across the UK, many of us have been feeling the effects, including tiredness, headaches, and even cramps during day-to-day tasks. But beyond comfort, high temperatures also shine a spotlight on something vital we often overlook: hydration.

As a physiotherapist, I often get asked about the “best supplements” or “magic tools” to help recovery and prevent injury. But one of the most overlooked and underestimated tools is already in your kitchen, or ideally, already in your system: water. Hydration doesn’t just affect your energy levels; it can directly influence your risk of injury, your healing process, and even how effective your rehab exercises are.

Let’s break it down.

Hydration and tissue health.

Your muscles, tendons, ligaments, and intervertebral discs are all dependent on water for their function. In fact:

• Muscles are about 75% water.
• Cartilage is around 80% water.
• Your spinal discs are like jelly-filled cushions, without hydration, that jelly dries out.

When you’re dehydrated, these structures lose elasticity and shock absorption, making you more susceptible to strains, sprains, and even joint irritation.

Dehydration increases injury risk.

If you’re not hydrated, a few key things happen that increase your risk of injury:

• Reduced joint lubrication: Less synovial fluid = more friction.
• Muscle fatigue sets in faster: Dehydrated muscles cramp and spasm more easily.
• Delayed neuromuscular control: Think slower reaction times and poorer balance.
• Compromised tissue resilience: Ligaments and tendons become less pliable, more prone to micro-tears.

It’s not just athletes this affects; this is just as true for office workers, manual labourers, and pole dancers alike.

Hydration and recovery time.

When recovering from injury, hydration supports:

• Nutrient delivery to tissues through blood and lymph.
• Removal of waste products from damaged cells.
• Fascia glide and mobility are especially relevant in post-op or post-injury rehab.
• Inflammation control, hydration helps regulate the inflammatory process, which is essential for healing.

In my clinic, I often see patients who are doing all the right exercises, but still feel sluggish or stiff during rehab. One of the first things we’ll check? Fluid intake.

Signs you might be dehydrated (even mildly).

You don’t need to feel thirsty to be dehydrated. Other signs include:

• Muscle cramps or “tightness” you can’t foam-roll away.
• Headaches or fatigue during exercise.
• Stiff joints first thing in the morning.
• Dry lips, skin, or eyes.
• Dark yellow urine (aim for pale straw colour).

How much should you drink?

A general guideline is:

• 2–3 litres per day for most adults.
• Add more if you’re training, working in heat, or unwell.
• If you’re exercising, aim for 200–300ml every 15–20 minutes, especially in hot environments.

It’s not just water that counts; fruit and vegetables, herbal teas, and water-rich foods like soup also contribute. But fizzy drinks, caffeine (unfortunately), and alcohol don’t hydrate as well, and can dehydrate in excess.

What I recommend as a Physio.

Whether you’re recovering from injury or trying to stay injury-free:

• Start your day with a glass of water.
• Keep a bottle nearby during work or while working out.
• Don’t wait to feel thirsty, thirst is a late sign.
• Monitor your pee colour (yes, really).
• Consider electrolytes if you’re a heavy sweater or training intensely.

And if you’re seeing me or another physio for rehab, hydration is part of the prescription. It affects everything from how your tissues respond to treatment, to how mobile your joints feel in session.

Hydration isn’t just about ticking a box. It’s a foundational pillar of injury prevention and recovery, and something you can control every day. So before you reach for that new supplement or spend hundreds on a new kit, check your water bottle. Your body might need a top-up.

Warm regards,

Jane x

Chartered Physiotherapist & Founder of Pole Kinetics PT