Sorry probably been asked before but..

My bmr says I'm allowed 1570 calories a day based on been 5ft8.5 and 11st 7lb in terms of exercise calories I will be earning ( work out 4 times a week cardio weight ect) should I eat these back or not or could I even save these for my vodka diet I colas on weekend??? Here so many mixed up messages on here regarding this issue I tend to be fine eating through week it's he weekend I tend to eat and drink more xx

BMR is Basal Metabolic Rate, which means it's the baseline for your body to function before you count exercise. If you're using MFP's method, it expects you to eat back your calories, so that your NET calories do not fall below that BMR.

Day-to-day totals are somewhat less important than weekly totals, so 'saving up for the vodka/diet colas' shouldn't adversely impact your progress (although alcohol can slow weight loss to some small degree).

There are several folks who distrust the exercise calories burned as given on MFP, and thus suggest eating back only 50% - 75% of those calories; provided you're eating back enough calories to land between BMR and TDEE (Total Daily Energy Expenditure), you should be fine.

As always, make adjustments as you go along, depending on how your progress is going.