For the past couple of months, maybe a few days out of the month I’ve been getting these aches in my shins that sometimes extend up and over my knees. It doesn’t hurt to walk, only to rest. Any ideas? Could this be from too much sitting? Sometimes I’m in class for 8 hours at a time with not many breaks to get up and stretch my legs. Does anyone else get a weird sensation on the left side of their chest like a flutter? Mine feels like a twitch, similar to when my eye twitches. It doesn’t hurt. But it concerns me because of the location. Thanks for reading!