Dramatic changes in your food will leave you having cravings, mood swings, brain fog and general lethargy. Not a great combination when attempting to improve in the gym.
When making changes to your diet it is important to understand the effects food has on you, allowing you to be ready for the impacts that may come from removing the food.
For example, if every meal you have a coffee with 2 sugars, removing all coffees and sugar at once, you’ll find out pretty quickly how drastic such effects could be. A big reduction and sugar and caffeine and you’ll do well to stay sane, net alone maintain consistency with your diet.