58/100 | Annotations of GMC-cell fate paper and diagram of cell division of neuroblast and ganglion mother cell. More fun facts: did you know there are genes named Miranda, Bazooka (Baz), Numb and Shaggy (Sgg)? Oh and let’s not forget the “Ken and Barbie” gene!
Is there a cure for
jet lag? Just set your body clock in advance!
Jet lag is the result of our circadian rhythms – bodily processes
working on a roughly 24 hour cycle – being thrown out of sync with the environment
we suddenly find ourselves in. On the whole, these cycles regulate themselves
pretty well, but they rely on external stimuli, particularly light.
In our eyes, photosensitive ganglion cells (the less well
known cousin of rods
and cones) detect ambient light levels. In response to light, they fire messages
to the suprachiasmatic nucleus, which
prompts the pineal gland to secrete melatonin – the ‘sleep hormone’.
So can we use this to counter jet lag? You just need to set
your body clock to the right time: Before you travel east, go to bed one hour
earlier than normal two days before, and seek out bright lights as soon as you
wake up. One day before you travel, go to bed an extra hour earlier than normal.
Keep doing this each day, even while you travel, until you hit your usual sleep
time. Reverse the process to go west, and you should be jet lag free on your