5 Week Post IM Abnormally Low HR
A little over a month ago, I completed my first Iron Man at IMTX. The entire past month has been recovery/active recovery for me, with only around 10 miles of running logged and roughly 40 miles/wk of easy cycling. I wanted to ensure that my body was completely recovered after the effort, as I dealt with overtraining issues after my marathon in January and didn’t want that to happen again. The first 4 weeks of recovery were rough but I was improving slowly on a week to week basis. However, things completely changed this week (post IM week 5).
This week, my heart rate has been abnormally low. Normally during training, it would be hard to reach the low 50s bpm, which would mostly happen at rest or at work where I’d sit in an office chair all day. However, today it’s been consistently in the low 50s and was in the mid/low 40s for a good part of the morning. I have NEVER seen these numbers before, even in my peak physical shape I’ve never seen a HR in 40s while awake. My overnight RHR last night was the lowest I’ve ever seen. I haven’t changed anything different from my daily routine, besides getting a bit more sleep than normal, and still drink coffee in the morning. For context, I am a 22 year old male, 5’ 11” and 180 lbs. Is this something to be concerned about? I feel like this was such an abrupt change.