I just found out from a friend at work that I might be exercising too much. She said that if your heart rate goes to high for too long that it'll start depleting your body of needed sugar which will cause your brain to shut down. She said it'll make you tired.
Well, I've been doing the elliptical for a half hour maybe 3 or 4 times a week. And as soon as I get done, I'm so tired I have to take a nap. I mean, I'm not physically tired like "wow, what a work out!" but tired like "man I'm sleepy" and I can barely keep my eyes open.
Have you ever heard of that before?
I've never heard of it.
Now I'm going to have to do some research and find out what it all means.
She recommended keeping my heart rate between 120 and 130 for fat burn (for my age) but no higher. My heart rate has been pretty steady at 160 to 170 doing the elliptical.
I had no idea!