This is so wrong physiologically that it hurts to read.
For those who want to know the actual physiology behind it:
In low intensity exercise (which is up to about 70% of your maximum intensity/max heart rate) you pull out triglycerides from adipose tissue and use a process of the metabolism called catabolism to breakdown those triglycerides into fatty acids for use by your muscles as fuel. That is when you burn literal stored adipose tissue aka fat. This happens before carb catabolism due to there being enough oxygen present to use fat catabolism and the fact that we are built for long-term storage; it’d be pretty unfortunate if we as a species used all of our macronutrients from one meal to fuel ourselves instead finding a way to store macronutrients for when food is scarce.
When you hit about 70% of your max however, you are no longer taking in enough oxygen to use fat catabolismand switch to carb catabolism from glycogen stores created by unused carbs. You are no longer directly burning fat ONLY because you’ve hit oxygen levels too low to do so by doing high intensity exercises. If you went back to low intensity, you’d switch back to fat catabolism. This is actually partially the reason why they say high intensity interval training is so effective.
All of this is paraphrased from the sixth edition Human Physiology textbook written by Dee Unglaub Silverthorne. So there’s your source if you’re anal about sources like I am.
i love seeing these ridiculous posts being called out on their bullshit. seriously, stop believing everything you see on this website and do RESEARCH
That’s why I refused to reblogg this post the many times I saw it on my dashboard, I knew this couldn’t possibly be true. Thank you to whoever set this straight…