I think calorie quality and lifestyle routines calibrate the metabolism just as much as having an active lifestyle. Enjoying zero calorie beverages (coffee, te

I think calorie quality and lifestyle routines calibrate the metabolism just as much as having an active lifestyle. Enjoying zero calorie beverages (coffee, tea, celery water, etc) goes a long way in optimizing metabolism. In 2022, there are at least 3 basics that trash any metabolic gains. 1) Steroid/antibiotic infused proteins. There were articles about childhood rectal/colon cancers gaining with the same childhood obesity studies. The links seem obvious. Their body never develops healthy metabolic processes. 2) GMO/herbicide/pesticide infused organics. Again, once introduced into a [growing] body, even the immune system takes a dive, as well as the metabolism. There are certain carbs that make my metabolism crash exactly 24 hours after eating. I just don't buy the product(s) again. They obviously lab rat the masses with several of the food stuff product gimmicks. 3) Microbeads/nanoplastics in the water system. Kind of like CFC's, as the microbeads breakdown in the water systems, the human body is not going to mature like generations past with all the contaminants in the digestive system. Even the sunscreen/beauty products with nanoparticles that embed in the epidermis that melt under UV/sunlight or toxify the body are their own problem. They are already plentiful in the water systems. These are retail consumer products, just as CFC's were. Can you say junk science? Especially with calorie quality, if you did not adapt to 21st century lifestyles, there should be no expectations of a healthy metabolism. If diet, exercise and nutrition are healthy, the conversation on metabolism is much different. I'm personally 5% to 7% BMI with decades of zero calorie bevs and an active lifestyle. Never an ounce of extra fat and notice if any meals make changes to my body. Everybody has to grow old with their own body. I think the junkie paraphernalia with insulin and popping HBP pills was already suss decades ago.