Hey, I was wondering if it is healthy to workout everyday. I have played sports most of my life up until college and I have a little bit of a background in muscle training. I'm 6'2 about 170-175 lbs and pretty fit. However I now want to focus mostly on wieght gaining and muscle building. I know that you are supposed to have rest periods for each muscle group that you train but I wasn't sure what exactly appropriate resting periods are. I'm currently
workingout everyday and I'm training my biceps, back, shoulders and calves on one day, and on alternating days I am training my chest, triceps, abs and quadracipes. I'm not sure if this is over training, and if so how I should reschedule my week given that I do have the time to work out every day.

Also a specific inquiry I have is whether or not it is more beneficial to train muscles with isolation excercises, as most of the excercises I do incorporate more than one muscle group (i.e. I do bench press every other day which works both triceps and chest). Although I do mix alittle bit of everything

Any advice on would be helpful

Thanks
-Alex