i'm definitely going to be following this thread, because i've found myself in kind of the same boat lately. when i first started eating paleo over 2 years ago, i was most definitely low carb (less than 50g per day). i ate meat, fat, veggies, and very little fruit. over the course of about 4 months, i went from 180 to 165 and i was shredded. i felt great and looked awesome. then, my workouts started to suffer. i tend to workout very intensely 4-6 days per week. heavy weights. HIT training. boxing. mountain biking. etc. i didn't know what my deal was. i trudged on for about a year more. workouts suffered and eventually, i gained about 10lbs back, definitely all belly fat. my body was stressed. then i started reintroducing more carb sources. bananas, berries, sweet potatoes, spaghetti squash. i would typically have some fruit with my breakfast and maybe some sweet potatoes and squash with dinner. i felt great. stayed around 175. but my workouts were back to normal. then, about 8 months ago, i started cycling my carbs. monday-friday i was low carb. then saturday and sunday i was high carb/low fat. a bit of a re-feed. performance suffered. i felt bloated after the high carb days. i even gained a few lbs. then, about 3 months ago, i started really experimenting with carb timing and a different type of carb cycling. right now i alternate days of low carb (about 50grams) and high carb (about 200 grams). and i'll have a little carb in my breakfast. some banana/berries in a huge shake or with my bacon and eggs. then i'll be low carb for lunch or even IF, and then i work out in the afternoon. then i have the bulk of my carbs post workout with dinner. sweet potatoes, white rice, etc. my performance is great, and i've been actually growing muscle (chest/arm/thigh measurements all went up in the past 3 months) and losing fat (waist is shrinking a bit, tightened up the belt an notch, showing a solid 4 pack now. funny thing is, my actual weight is still hovering right around 175. oddly enough i was 178 this morning. so i think i found what works for me in terms of carb consumption. but it's definitely more of a slow and steady approach. since i tend to work out hard 4-6 days per week, eating high carb/low fat during the "hard" days would mean i ate that way most of the time. so it seems like doing it on alternating days is working better. for now. we'll see. give me 3-4 mor months and who knows, maybe my metabolism will be screwed up again. i really hope this is the answer though. or maybe it's not. maybe eating higher carb/lower fat all the time is good for someone as active as i am. i just don't know.