Hi everyone -
Relatively new to Keto (started Jan 15th - Strict Keto < 20g net carbs), completely new to this forum but (very) experienced cyclist.
My max HR is 167bpm, endurance between 123 and 139bpm, level 3 as of 140…
For the first time today (I noticed last week as well but to a lesser extend), my HR got very fast to 140, 145, 150 bpm on a simple endurance ride (Zwift), pushing only 2.0W/kg.
Normally, at that power, I should be around 120 bpm maximum, I was flirting with 150 but completely able to talk (as if I were around 120 bpm). I was completely amazed.
Can someone explain to me if this is a sign of fat adaptation or just a regular effect of a Keto Diet? or anything else?
Worth to note that while my HR was high and my feeling was all right… power was very low and it was very difficult to push more… I was abnormally tired with a feeling of no power in legs…
Thx a lot beforehand
Seb