Explanation for the pain

[Spy,]

I had a tight chest neck and shoulders last night and a migrain it was like someone was sqeezeing each part then lettign go then sqeezeing again it went on all day i found t really hard to sleep i didnt get to sleep till like 3am coz of the pain i woke up with the pain in my shoulders chest and neck gone but the migrain still there ive taken some anadin extra and the migrains gone now i was just asking wut could of casued somthing like this?

[Aflux]

It's most probably just muscle spasm's which are quite normal, especially in those kind of places [big muscles].

Spasms are usually caused by cramp so check you're sleeping comfortably and sitting comfortably with proper back support. Also, if you lift anything heavy, don't bend your back.