Ken,
I do as mentioned above. When I walk by them in between honey do's, I draw, hold for 7 seconds, release or let down. Repeat as time allows.
You will build up in no time. I can shoot a 3D event easily with my #75's. I did it once with my Skookum that was #84 at my draw. I was only slightly fatigued, and a little sore the next day. I was using that bow as my work out bow. My new workout bow is #86.
I did well with CX350's out that bow.
Manny, I can't get your TC out my mind now. After I get my Black Canyon, I think I'll be saving up for a copy of yours. Boy, Jim has a ton of wood choices. I gotta stay off his site.