how to not lose weight or muscle after stopping taking weight gainer ?

i was going to buy a weight gainer called mass tech with 1000 calories , 60 grams of proteins, 10 grams of creatine monohydrate , 10 grams of bcaas , 5 grams of glutamine , for 3 months , i was asking if i will lose all my gains of weight and muscle after i stop taking them but i will continue working out and if yes i will lose weight how to avoid that or not lose many weight ?

How to Lose Weight With a Six Week Program

Recommended Answer:

Look, to understand it, know a simple factIf you eat more calories than you spend - you gain weight (be it muscle or fat, that depends on if you are working out)If you eat less calories than you spend - you lose weight (be it muscle or fat, that depends on the amount of deficit and if you are working out) So, if you stop taking weight gainer and you are suddenly at a caloric deficit - you will start losing weight gradually. But as long as you eat well and train, you will continue to grow.Having said that a weight gainer is a waste of money. It's for stupid people who don't realise a simple fact - why bother buying a processed powder when you can get most of those things from simple food?Protein, BCAA, even creatine can be received from food. From your chicken/red meat/fish. Just eat more, why do you need a weight gainer?