Bodybuilding Forums

Hi all, been viewing for a while and thought i'd post and let you know what I am doing. I have been on a gi diet, but have increased my calories and protein with tuna, chicken, egg whites and sunflower seeds. I am 37 next month
I have been training on the weider split system , body parts twice a week since the beginning of oct, but with load increases I have noticed in the last few weeks I have been feeling tired and workouts are taking about 50% more time. Is this overtraining?
My sizes at october at december
154lb @5'6" 152lb
neck 15.5" 16"
Chest 40.5" 40"
biceps 13.5" 14"
forearms 11" 11.25"
waist 33.5" 31.5"
thighs 22" 22"
calves 14.5" 14.5"

I am going to try Marks THT course in january what do you guys think?

first week of tht, feel like there is a lot of improvement muscles feel firmer and not as fatigued.
will post measurements next month.
thanks guys

Measurements 1st month in

weight 154lb
neck 15.5"
chest 40"
biceps 14.5"
forearms 11"
waist 30"
hips 36.5"
thigs 22"
calves 14.75"

I have started adding protein shakes to my diet. Can feel the benefit in recovery and strength.
sizes have not significantly changed, but definition is improving plus shoulders and traps seem bigger. plus waist is getting thinner.
Thanks guys