It seems that the health and fitness world cannot make up its mind about anything. During the 1980's, we were told that margarine was better for you than butter. In the 1990's, we were told the opposite. Once upon a time, drinking alcohol in any amount was said to be unhealthy. Some of it is good, some of it is bad, and some of it is really bad.
Human beings share a number of undeniable similarities.
However, what works for some in the fitness arena may not work others. Well, don't be. This level of frustration can lead to the end of your program. Realizing that your body may not respond the same as others is important. We are all genetically diverse.