Relax, you didn't gain weight. In fact, a reason why you notice the scale going up, is the water retention comes from carbohydrates (carbo-HYDRATE). The more the carbohydrates, the higher the number on the scale the next day.
You'll feel bloated and most likely full of regrets the next 24 to 48 hours.
If you want to avoid this situation or at least limit it, try to:
Have a cheat day planned, plan exactly what you'll going to eat and stick to it.
Avoid food that you know you can't digest easily.
Drink a lot of water
Notice how you feel after each cheat day and if it's necessary have a cheat meal instead of a whole day.
Do you need more help?
Contact me now.
Tania L .
ISSA Certified Personal Trainer
ISSA Certified Nutritionist.