Cheat day can have a variety of effects on different people. From emotional changes, to aches in the body, ‘hangover’ type effects similar to the morning after drinking, and other weird side effects, like food cravings.

The reasons for these changes and effects include water retention, changes in brain chemistry, changes to your digestion, and changes in your blood stream in how much blood sugar you have, how much insulin you have in your blood stream, as well as other factors such as sodium intake.

Ensure you drink lots of water, and have a read of the following article:

The Hangover