I've been noticing that after I ride my bike to work (5 miles up & down hills) my hands and fingers are shaky. Is this a "normal" post-workout blood-sugar dip, or something I should worry about more? I have breakfast before I go out (a 240 cal protein shake w/ only 5gm of sugar carbs), so I'm not skipping any meals... is it because biking uses a lot of fast-twitch muscles getting up hills too, and I don't have enough sugar in my system? It's not something that's happened to me while in the gym though. In the gym, I may have a hard work-out on the cardio machines, or reach muscle-failure on the weights, but I'm not left trembling.
It especially worries me because my dad was just recently diagnosed with Type II diabetes. He doesn't have to do blood-sugar testing or insulin - just needs to lose a few lbs, exercise and eat right, but it's verified something I've suspected were in my genes for a while now, and so I'm worried this may be more than it is. If anybody can shed some insight as to whether this is perfectly "normal" or not, it would be appreciated.
I don't feel particularly weak - just shaky and uncoordinated for a while. It'll eventually go away on its own, or faster if I eat something, but it's certainly not something that happens after I sit on my butt in the car for 10 minutes to get to work!
--Janis