So I've been working out 4 days a week for 6 weeks now. Been doing upper body mondays and thursdays, lower on tuesdays and fridays. One thing really has me down at this point, I can't bench to save my life. Started out benching a measly 85x10, now I'm only up to 90x10. Everything else has gone up quite dramatically, but my chest is just not with the program. Any advice to give my chest a jumpstart? Usually my upper day starts with the bench, if that matters.