if you are 51 at 185 then you are a pretty big dude. i don't know if this is fat or muscle so i can't preach nuttrtion to you but you are at the best place i could promise you that. as far as training goes you need to get more rest inbetween your training splits.
for example i train accordingly.
mon-chest
tue-back
wed-legs
thur-bi
fri-shoulders/tri
you see how i have approximatly atleast 48 hours of rest for my tri's on chest day before i truly hit them again on friday. and haow i get 48-72 hrs before i train ny bi's after hitting back. this is crucial rest that you need. remember you grow outside the gym not in it.