How much should I drink around training?

A practical approach: drink to thirst through the day, have 400 to 600 ml in the couple of hours before a session, sip during it, and replace what you lost afterwards. If you regularly train hot or sweat heavily, add electrolytes rather than just more plain water.

Does Sweating Burn Fat? The Honest Answer

Does Sweating Burn Fat? The Honest Answer from CrossFit BC. Sweat measures cooling, not calories. What a soaked shirt really tells you, why the scale drops after hot yoga, and what actually drives fat loss.

Written by:: CrossFit BC Coaching Team
Section:: Nutrition
Reading time:: 8 min
Topics:: fat loss, sweat, hydration, myths, weight loss, Vancouver
Published:: Saturday, August 15, 2026
Last updated:: Sunday, August 16, 2026

Does Sweating Burn Fat? What Your Sweat Actually Measures

This article is part of the CrossFit BC journal, written by the coaching staff who run our classes in Olympic Village, Vancouver. We publish what we teach on the floor: training decisions, recovery, nutrition, and the honest tradeoffs behind them.

Common questions

Does sweating more mean I burned more calories?

No. Sweat rate is set mostly by core temperature, air temperature, humidity, clothing, fitness level and genetics. A fit person often sweats sooner and more, because their cooling system is better trained, while doing the identical workload. Two people can burn the same energy and finish with completely different shirts.

Why does the scale drop right after a hot workout?

That is fluid. A litre of sweat is a kilogram on the scale, and it comes back the moment you drink. Fat loss shows up over weeks on a consistent scale reading, not in the ninety minutes after a hot yoga class.

Are sweat suits and belts useful for weight loss?

They increase fluid loss and heat strain, not fat loss. They also reduce the amount of quality work you can do, which is the part that actually matters. Skip them.