On #ThrowbackThursday, Instagram is filled with users posting pictures of past photos. Compared to #TransformationTuesday, #ThrowbackThursday is all about posting a past memory.

Some post embarrassing selfies from middle school, others post memory photos with friends and family or places they have visited. If the hashtag is clicked, one can see 38 million #ThrowbackThursday pictures.

#ThrowbackThursday is good day to look back at fun memories and reminisce, post selfies from middle school where all the boys had Justin Bieber haircuts and everyone wore 3D glasses from the movies or post a picture from one of those crazy nights with the gang where the concert blew everyone’s ears off.