Well, I have kind of a weird, and maybe unique situation when it comes to energy level…
I think this is due to my Fibromyalgia and maybe some overlapping Chronic Fatigue Syndrome. Now don’t get me wrong, I’m doing much better now, than i was for most of my life up until 11 years ago… And even since my back injury 5 years ago, I’ve kept a lot (80% ?) of my FM symptoms at bay.
But here’s the thing, 5 years ago, people would have probably looked at me and thought I was ready to climb a mountain with a 40 lb pack, at the drop of a hat… But that was only partly true. Usually I would start out feeling like I could barely force my to walk… Weak… no energy ? But 10 or 20 minutes in, once I had my adrenaline pumping, I’d feel like Super Man. Weird, right ? Or another thing, at my work, I’d have to climb stairs pretty often… But even after I had turned my health completely around, lost all the fat and gained a bunch of muscle, it was hard to get myself started up a set of stairs… Not enough time to get my adrenaline going ?
Long story short… Even now, going on 4 months of Keto, my burst energy sucks, but once I get myself warmed up, I feel like my endurance is close to what it was before Keto.