If i hold a mar elation 3 days into my diet will it enjoy a big effect?

All i have have today is a bowl of ready oats near no sugar a sandwich and mash and mince,i go down the park for 50 mins playing football,an took a dog for a walk for roughly 1hr will this mars own a big effect?or will it help,ThanksIf i hold a mar elation 3 days into my diet will it enjoy a big effect?
considering adjectives the activity you did, and a mar has conceivably 200 calories in it. I would say aloud it's neglegible.
Yes, you are going to explode.