Question: I'm a 43 yo female. I exercise at least 6 days a week including running 3 to 4 days a week. While at the gym today doing a less intense workout (walking on a treadmill at a 7% incline) I suddenly felt shaky and weak. I felt like my heart was racing but it wasn't. Pulse was 114 just after working out. I stopped working out because I thought my legs would buckle. I sat XXXXXXX and it took a long time to catch my breath. About 20 minutes later I felt okay enough to drive home. This is the second time this had happened in a month.

I was not hungry, this occurred around 6pm and I had lunch and a snack. I avoid caffine because I get heart palpitations. I had a Holter monitor test and a nuclear treadmill test a few years ago and everything was normal. Also, I started taking high blood pressure medicine when I was only 30 and Lipitor three years ago. I'm 5'7" and 142. I've never been over weight. I was adopted, so it's assumed HB and cholesterol are hereditary. Otherwise perfectly healthy.

Thank you Dr. Teli.
Menstrual cycle has been a bit heavier and more frequent (21 days) in the past year. I've been thinking that's due to my age. I've been tested for blood sugar twice in the past 2 years, once while fasting it was 90, then not fasting it was a bit lower ( don't remember the number, but normal) I've tested negative for anemia. Also my thyroid is normal.