Learned a good lesson today...I am such a dope!
I work midnights so I sleep during the day. Got up today around 1630, did a few quick things around the house and then decided to go for my ride. So, I had done about 8 miles with some good sized hills and then stopped to chat with my barn owner who was out in her yard (the barn where I keep my horse is also on my bike route). Well, I was standing there chatting with her and I suddenly started getting light headed and dizzy and feeling like I was going to pass out.
At first I didn't know why then the lightbulb went on. D'oh, I forgot to eat before I left!!! So I hadn't had anything to eat since about 5 that morning. I am such a ditz!
Thankfully I have a supply of valentine conversation hearts in my tack trunk at the barn (my horse loves those things!) I went and raided my supply and within a few minutes I was feeling much better.
So my advice to all, make sure you eat before you ride!