&quot;Try weighing yourself before bed and when you wake up. You&#x27;ll find you lose a pound or more for exhaling carbon in your sleep&quot;<p>I&#x27;ve tried this a bunch of times and have seen up to two pounds difference on rare occasions!<p>A significant fraction of the weight loss is due to water loss though.<p>(and technically it&#x27;s carbon dioxide, not &quot;carbon&quot;, although with climate change being blamed on &quot;carbon&quot; we may have already lost the war on that misnomer!)