Feeling weak and fatigued? A little glum and sluggish? Maybe like your 7-dehydrocholesterol is not hydroxylating and then binding with receptors to stimulate proteins that regulate calcium absorption and muscle function?

It may be you’re low on vitamin D. We all have an inert cholesterol (7-dehydrocholesterol ) in our skin that just sits there until it gets hit by ultraviolet B (UVB) rays from the sun. Then boom! The cholesterol turns into vitamin D3, which gets hydoxylated into a feisty little hormone that does all sorts of awesome, important things like make you stronger, less fatigued, and a better athlete.  According to a fresh new study, a shot of vitamin D even improves the recovery of skeletal muscle strength after an acute bout of intense exercise.

It’s no wonder vitamin D has been getting lots of attention lately. An increase in vitamin D is being prescribed for everything from depression to auto-immune disease to muscular sclerosis. High performance athletes are starting to take seriously the advantages of including vitamin D in their training regime.

You can try to up your vitamin D by taking expensive supplements, or by eating beef liver and cod liver oil. But who wants to do that? Especially when the best way to get your vitamin D on is to get outside on a sunny day. Even when it’s cloudy, more than enough UVB rays get through to turn your skin’s stores of 7-dehydrocholesterol into mighty little shots of energy serum.

The bottom line is this: working out outside makes you a lot happier and even a little stronger than working out inside. The benefits of vitamin D are so profound that even coming and sitting on the curb to cheer on a queerfit workout is, on balance, more beneficial than spending 45 minutes inside a gym on an elliptical machine.

So come on out, ch’all – it will be 77 degrees and partly cloudy (which, confusingly, is sunnier than partly sunny) today at 6:15. We’ll meet up at our usual spot near the Inman Park MARTA station and, powered by the mighty sun, lift heavy things.