The problem is, like you were saying, the biorhythms.

It's a Checkmate device -- a mechanical parasite powered by the host's biorhythms.

Being a vampire is like having different palates… or different biorhythms don't you think?

A werewolf's biorhythm... and how it's governed by the cycles of the moon.

We've seen spiking in her biorhythms... which indicate a rudimentary connection... but half her alien genes are dormant.

We've seen spiking in her biorhythms... which indicate a rudimentary connection... but half her alien genes are dormant.

If you're right and that transmitter's powered by your biorhythms, then the only way that I can turn it off is to stop your heart.

I only came to realize it 17 days after your apparent demise... ...when I was alerted to a single pulse of your biorhythmic signature.

I only came to realize it 17 days after your apparent demise when I was alerted to a single pulse of your biorhythmic signature.

A study was prepared on the arrangement of the school-day schedule and biorhythms, looking at recess and meal times in secondary schools in relation to student nutrition, health and academic performance.