Quote Originally Posted by Rob Furness View Post
Glad to hear things are all ok Stagger. I'm assuming you put your HR monitor on because you felt odd in your chest, would that be correct? What did you feel like?

On a similar note, does anyone else find there HR changes quite quickly? If I'm doing a resting HR reading I find it noticeably speeds up when breathing in, and drops considerably when breathing out. If I time it right I can get resting HR readings in the 30's but usually they're low 40's. I've always assumed this was normal but wondered if anyone else has noticed similar.

Whilst I'm banging on, does anyone else go a little pale/dizzy and get cold lips and painful jaw/teeth after running at max effort stuff (i.e 5k, or more recently bunny runs). I always finish feeling wretched and go a little pale with light-headedness and this weird pain/discomfort round my jaw with a blood taste in my mouth. It passes fairly quickly and I'm assuming it's simply a result of running close to max HR. What do you think?
Hi Rob. It is normal for heart rate to slow a bit during expiration - this is called sinus arrhythmia - it tends to disappear as people get older. I have no idea what is going on with some of the symptoms in your last paragraph! I suspect we all feel a bit off when running at our limit over short distances - I have felt a bit light-headed occasionally under these circumstances and I blame it on a mismatch between breathing and energy consumption - I think there is a tendency to breath too much - hyperventilate - as we approach the finish line.