The commonest reasons six-pack abs areArm Up System Review not apparent in most people are a that they are covered by too much fatty tissue fat and b) that the rectus abdominis muscle is not toned enough. However, even toned stomach muscles may be concealed by excess fat. And, conversely, you may have noticed that very thin people who may not even exercise at all, have visible "six-packs", so that goes to show the importance of being lean in demonstrating sexy abdominal musculature. I remember a friend of mine who went to the gym regularly and developed great-looking six-pack abs, only to "lose" them in a matter of weeks, after he put on some weight.Especially for men, the appearance of toned stomach muscles automatically increases their sex appeal. It is possible that this is due to the standards of beauty set forth by the fashion/beauty industry. Otherwise, the reason may be deeper. It is interesting that many features considered sexy in men and women, have been attributed, by anthropologists and evolutionary psychologists, to specific, logical causes that have to do with the "survival of the fittest".For example, men with toned, pronounced buttocks are thought to be considered sexy by women, because, during sexual intercourse, they are able to thrust their body more forcefully, and thus increase the chances of impregnating a woman and transferring their genes (which is considered by many the objective of all living organisms).So there might be a similar reason that toned abdominal muscles are considered attractive. Achieving a six-pack appearance is considered tedious. That may have to do with the fact that some of the most effective exercises for getting 6-pack abs, like crunches, are rather hard and can put undue strain on the neck and if done wrong. In recent years, we have seen many abdominal exercisers on the market, which can be used in an upright position, and this is definitely a big plus. https://supplementdiary.com/arm-up-system-review/