So I started lifting again last week (last time I lifted was in Feb , a bit after I left a personal trainer). Last week's schedule: Sunday - Chest, triceps, core, 25 min cardio Monday - Legs, 15 min cardio Tuesday - Indoor bicycle 30 min Wed - Off (too sore to move) Thurs - Off (recovering, Cowboys game) Friday - Back, biceps, core, 30 min cardio Sat - Shoulders, 35 min cardio Sunday (Yesterday) - Cardio for an hour Today I went to do chest and tris again, warmed up much better (5 min bike, 20 reps of very light weight, stretched), then I went to start pressing and found that even reducing weight by 25% I was failing toward the end of the reps. Mostly it wasn't my chest, but my left (weaker) shoulder. Right now my left arm feels like jelly, even though I didn't notice any particular weakness prior to today. After what I felt was a pretty good first week I am very down on tonight, I couldn't even maintain what I did last week. Is this to be expected, is my routine complete shit, or did I try to do chest too soon after shoulders? I never felt I did great on my shoulders, didn't get too much DOMS, felt really good, been keeping protein up, etc.