In which trimester does the fetus go through periods of sleep and wakefulness? in the trimester the fetus goes through periods of sleep and wakefulness and responds to bright light and loud sounds.

This happens in the second trimester. I'm pretty sure that's the right answer. I hope it helps!

by going smokefree, you could improve the well-being of your friends, family, coworkers, and even your pets. here’s how the cigarettes you smoke affect the people around you.