I would agree to an extent, but in my non expert, non medically qualified opinion, I would argue that although genes and/or shared genes within a group that would produce shared traits, (skin color, hair color, eye color, structure, features, and so on is obviously true, and that it would carry to some physical size and build characteristics as well, I wouldn’t say that the propensity to be genetically skinny or fat would be great enough to omit a cool feature like a weight loss plan within a fitness program like SYSTM.
I have seen plenty of examples of shared “HABITS” that can counteract any small effect that genetic makeup has on body fat percentage.
Look at the military, or athletic organizations, or certain industries or professions and you’ll see that this equalizes any genetic pre disposition to be fat or skinny, (or somewhere in between). Looking beyond the present, (because presently most people in a civilized society are fat, lazy and soft by comparison), with a focus on the past, you’ll find that obesity and lack of fitness were far less prevalent. Just 30 or 40 years ago we were in better shape as a society and the further back in time you look, the more pronounced that difference is.
For a dramatic example of caloric deficit, look at films and photos from the Holocaust.
Watch movies or TV from certain decades and you can see us evolve into an overwhelmingly obese culture, (more so in the US than anywhere else). I think there were perhaps a handful of people overweight in the movie JAWS and they were thin by today’s standards.
I’ll steal a quote I found online that summarizes it very well: "
Jung Han Kim, PhD, an obesity researcher and professor at Marshall University’s Joan C. Edwards School of Medicine, agrees. Obesity has increased around the world with industrialization, a sedentary lifestyle, and a fat-filled diet."
I can tell you from personal experience, and I think it’s plainly obvious that the more active we are and the less fat filled foods we eat can have a profound impact on our physique and weight. The type of activity makes a major difference, (look at Olympics and the differences between those folks, or look at pro cyclists compared to NFL football players, etc).
So in summary, I would say that for the most part a training plan to lose weight or get leaner, is a pretty simple thing and would work for the vast majority, with the exception of someone who’s got a medical condition that has something to do with metabolism. That’s why I thought it would be a cool feature, because the training plans there now, while great for improving overall health and focusing on certain aspects of cycling performance aren’t the same as a training plan to lose body fat.
I’ve followed SYSTM for over a year, going from one training plan to another as well as cycling outdoors and I can guarantee that while my cycling performance has improved my shape has not. It has to do with my lifestyle, diet and type of exercise within the training. 45 minute blocks of HIIT are not the same as 2 hours of cycling at tempo. 15 minutes of free body exercises and yoga are not the same as 1 hour blocks of resistance training in a gym. I think you get the idea.
Feature request: Body Fat Loss training plans in SYSTM. I think it would make a great addition to a fitness product.