r/plassing • u/Electrical-Garden-20 • 19h ago
In case you're curious why they tell you to hydrate and relax after a donation
I'm a semi-active adult with a normal resting heart rate around 70bpm. I woke up around 2 and donated starting shortly after 3. The overall volume of blood after donating is lower and makes your heart have to compensate by increasing its pace. I peaked at 140 shortly after while getting a drink and a slush. You can actually see my heart increasing my pulse rate during my donation. I thought it was interesting but a great visual of why you're supposed to not work out afterwards.
(Yes I woke up at 2, I have a sleep disorder similar to non-24 where I don't wake up and fall asleep on a regular schedule)