1. It's Monday.
2. You already washed your hair for the week.
3. You forgot your headphones.
4. You already have three dots on your FitBit, so you feel sporty.
5. It's Saturday.
6. Your favorite sports bra is dirty
7. It's really cold/windy/hot/raining, so you can't.
8. You don't really know how to "work out"
9. You're sore from walking to class
10. Your ex could possibly be there.
11. Your hookup, who vaguely remembers you, could possibly be there.
12. It's that time
13. You get too sweaty to be in public
14. You are too hungover.
15. It's been a long day and seeing girls skinnier than you is just not what you need right now
16. "The Bachelor" is on.
17. You haven't updated your Spotify playlist.
18. "Homework."
19. The lunch menu looks good, so, priorities.
20. Your friends can't go with you.
21. It's Friday.