It seems to be the consensus that on a cut you should not change your training program and continue to lift heavy. Although it is also commonly stated that the body cannot gain muscle and loose fat at the same time.
How can a 5x5 program such as starting strength or strong lifts work on a calorie deficit? In theory you shouldn't be able to progress at all since your body does not have the calories to add muscle? Do people just stay at the se weight during the cutting phase?