I think you need to adjust first slowly which is better than directly going into one meal a day. Your body will feel weaker since it feels it is in shock if you go straight for OMAD diet. Try to switch first from 3 meals a day to 2 meals in a week and then adjust your snack time. Then your body will be able to embrace whatever diet you decide.Well i Tried One Meal a Day Its Not Too Good To Me Because I Feel Nausea Everytime I Tried one Meal a Day Well i Prefer 2 meal a Day And i Think Eating One Meal a Day I loss Some Weight But i Feel Weaker and I Don't Have Any Energy To Do Some HouseHold Chores But i Really Like 2 meal a Day its Good Too.