October 1, 2025

Are you drinking enough water?

Lessons from a Fit life.

Are you drinking enough water? Allow me to share an anecdote. A client was talking about how hair dressers/barbers can look at someone and tell how long it’s been since their last haircut. 

‘Can you do the same thing with someone’s last workout?’

No. But I can spot my tribe. It’s easy to look someone up and down and assess if they do yoga, free weights, or marathons. 

I”d even be able to pick out crossfitters too but they just up and tell you.

You can also pick out people who drink.

Drink water that is.

Their skin is vibrant; they have luscious hair. They’re upbeat, healthy and are less prone to injury when working out. 

Massage therapists will tell you hydrated muscles feel different (think juicy steak) than dehydrated ones (beef jerky). They can spot it with their hands.

Sound like a tribe you wanna join? It’s easy. Just drink your water.

How much water?

How much water should you drink daily? The formula I followed to this point:

  • Your weight (lbs) / 2 =
  • oz’s of water you should drink daily.

Simple. Now, however, there are some new thoughts. Let’s grab a drink, shall we.

High Quality H2O

Renowned Neuroscientist and YouTube sensation Andrew Huberman has another formula for water intake that is independent of body weight. 

‘8 oz of fluid, or 240 Ml of fluid on average for every hour from the time we wake up, until 10 hours later. If you are engaging in exercise you should take your bodyweight in lbs, divide that by 30, and that will give you the number of oz’s of fluid to ingest every 15-20 minutes on average while exercising.”

Quick math for a 150 lb person:

  • 1st Formula= 75 oz water
  • 2nd Formula= 80 oz water
  • 2nd Formula + :30 minutes of exercise= 90 oz of water.

How much is too much?

Are you drinking enough water? Or perhaps you’re drinking too much. It’s hard to consume too much, but it can be done. That’s called hyponatremia. Your essential minerals get diluted/depleted. It is rare, but it can happen, and it’s not good. Some cases of hyponatremia end in death.

Are you drinking enough water?

Does it have to be straight water? What if I drink 80+ oz of Diet Coke, coffee or beer instead?

All beverages contribute to overall fluid intake. Drinking that much Diet Coke, coffee or beer will not end well. You’re welcome to try… but stick with water or water w electrolytes.

If I’m dehydrated, how long does it take for me to hydrate?

Depends. If you’re generally healthy/hydrated and working out water takes about 15 minuted from lips to absorption, and 45 if you’re somewhat dehydrated.

If you’re chronically dehydrated it could take days, even weeks to get your body back up to speed. Go slowly. Your body hates rapid change/surprises.

Did you know your body gets an important amount of hydration from the food you eat as well? Sounds like another reason to eat some fruits and veggies and ditch the Twinkies.

Some of the other bennies of drinking enough water. 

If all that didn’t make you thirsty…

So come on, join the tribe. It’s as easy as grabbing a drink.

Related: Do You Have a Fueling Problem? · How to Beat the Heat When You Work Out

About the author

Stephen Allison

Stephen Allison founded Fit, a private personal training studio in Boston’s South End, after more than 20 years of coaching clients one-on-one. He trains runners, lifters and everyday athletes.

Want a coach in your corner? Train one-on-one with Stephen or another Fit trainer. Your first 45-minute session is free.

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