Originally Posted by abqhudson
I have discovered that Alleve (I take it for knee and hip pain) has a big impact on MY Heart Rate while riding. After not taking it for awhile, I took two tablets before a charity 22 miler this morning. My heart rate was at least 10 beats higher than it has been recently for a similar effort.
It was so much higher that I really did not know how much effort I was exerting - so I just rode by feel . ..
Are your sure it wasn't heat, over-excitement, exertion, humidity, lack of water, lack of sleep, plain tiredness, over-training or even talking to yourself (as well as possibly many other things)?