There’s college stress. And then there’s whatever engineering students are forced to endure. It’s intense, relentless, and written all over their faces.

A viral TikTok trend captures this perfectly, as they post their before-and-after photos showing the toll of just a few years in engineering school.

Here are some of the most striking transformations. If anyone’s earned a nap, it’s these people.

#1

Image credits: jorge.nader

#2

Image credits: lxfitness5

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Image credits: dillon.s6

#4

Image credits: hummus_vape

#5

Image credits: eikenai10

#6

Image credits: flo.ye3

#7

Image credits: pabloherrero04

#8

Image credits: thelastwhisper2632

#9

Image credits: kiannachang

#10

Image credits: greenlaine

#11

Image credits: saruman26

#12

Image credits: saruman26

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Image credits: saruman26

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Image credits: saruman26

#15

Image credits: iamniravkumarpatel

#16

Image credits: husseinjalal98

#17

Image credits: 824justice

#18

Image credits: nicolas_valdiviesor

#19

Image credits: lamacoachingllc

#20

Image credits: p.enpek

#21

Image credits: iluvjoshyy

#22

Image credits: saruman26

#23

Image credits: saruman26

#24

Image credits: saruman26