So I've been feeling intermittently sick and drained lately. Instead of my normal commute of ~16 miles, I've been using the bus and cutting it to 5, or no cycling at all.
Well, I forgot to buy a new bus pass, so did the entire 16 miles on the bike today, ~15-18mph headwind. Making a left turn. Didn't turn enough. Instead of correcting I...put my feet down and try to brake/slow down/pivot that way. No go. The thought of taking my hands off the tops, and reaching for the brakes somehow never appeared in my head. Instead, I just get ready to bail after the inevitable contact with the curb.
I did a fine job of bailing though, completely cleared the extra wide sidewalk to land in wet mulch. Not even a bruise.
Bonking is simply when your blood sugar level drops too low. Like if you go into a hypoglycemic state. It happens when you don't eat. You can bonk sitting at your desk doing nothing if you didn't eat all day ... and you'll bonk quicker if you're active without eating.
If you did the 16 mile ride with no breakfast, and very little to eat the night before, you might have bonked, and you would have started experiencing symptoms such as:
Lack of concentration/behaviour change
Pounding heart; racing pulse
Those are all symptoms of the early stages of a bonk. If you start experiencing those symptoms, it's a good idea to stop and eat something.
i've bonked commuting. you have to take care of yourself more and eat more. my advice is don't eat lots of sugar or caffeine, try oatmeal. its a slow digesting sugar that doesn't give you the sudden high imbalance.
I actually am a diagnosed hypoglycemic. I had a snack stop a about half a mile before, it just hadn't taken effect yet. I keep two emergency bags on my bike, 1 for tools&tubes, 1 for edibles. In hindsight I should've just hung out in the shade for 20 minutes, instead of just chowing and pedaling immediately afterwards.