Love him or hate him (mostly Low carbers and vegans !), none has been able to refute him yet. This is a long read, but essential reading imo if you value objectivity and different opinions. Do read the whole article. Cold hands or feet anyone ? Poor libido ? http://anthonycolpo.com/sorry-danny-albers-but-low-carb-diets-still-suck-for-athletes/ Let me give you an idea, from a guy who was once a very passionate low-carb devotee and who earnestly believed low-carb diets conferred no performance disadvantage whatsoever. This gentleman spent far, far longer on a low-carb diet than Mark “Doc Ott”, Darilyn Doddy, Jamie Caporosso or Mike Morton. This guy followed every variation of a low-carb diet you could think of: Non-ketogenic, cyclic ketogenic, targeted ketogenic, intermittently fasted ketogenic, intermittently fasted targeted ketogenic, and on and on and bloody on. I have no qualms about citing this guy, because I’m intimately familiar with his situation. That guy is me. Yep, I followed a low-carb diet for some 7-8 years, and convinced myself for most of that time that I was doing just fine. My main form of physical activity during this time was lifting weights, along with grappling and MMA classes. I made some good strength gains over the years, even during the ketogenic phase, and for years my body fat percentage hovered around the 6% mark. Like Darilyn, Mike and Joel, I appeared to be living, breathing testimony that low-carb diets were just fine for active individuals. That is, until the day in 2006 that I bought myself a shiny new road bicycle. I started riding that baby in the hills, and at first everything seemed fine. But then reality started biting me on the ass, as it always does when you’ve been living under a delusion for way too long. It was only a matter of weeks before my legs started to feel like concrete blocks and my ride times started going to hell in a handbasket. The day I got dropped up Monbulk-Olinda Road by some guy with pipestem legs was the last straw. I went home, said goodbye and good riddance to my ketogenic ways, and was delighted to see my performance on the bike improve immediately. Fast forward another 2 years, and I gave not just ketogenic but low-carbing in general the big middle finger. And it was truly one of the best and most liberating things I’d ever done (yep, dietary divorce can be just as invigorating as the real thing hahaha). Along with further dramatic improvements in my cycling fitness, I noticed improvements in mood and something else that was quite memorable: My shockingly low tolerance for cold weather had disappeared. No longer did my nose and fingers feel ice cold to the touch in winter, and no longer did I have to use 3 doona covers on my bed. Hell, it sounds absurd looking back, but that’s where I was. Yep, thanks to my low-carb diet, I’d endured years of Euthyroid Sick Syndrome and had no idea why until after I dumped this sorry way of eating.