Looking at the heart rate charts on the front page, it seems that the rates during meditation are actually much higher on average (eyeballed at 92 bpm) than the rates while surfing the internet (eyeballed average of 75 bpm) (and while the meditation rates have a lower variance, their mean seems to be in about the same range as the absolute highest heart rates while surfing the web).

As someone who knows nothing about meditation (but obviously I have some background assumptions), this is surprising to me. I would expect meditation to be relaxing, and I would expect to see lower, i.e., closer to resting heart rates (<60 bpm). Can you explain this?