i need to make an addition to what i wrote above. First, on cycle training does get amplified. I often focus on a few concepts, those being training intensity, rep and set increase and decreases rest periods between sets. For example, say you're doing 4 sets of 10 on flat dumb bell press, say you're pressing 100. Let's increase the sets, but decrease the reps. Start with 90 for 8. Then, go for 115 for as many as you can get, but if u get 8, stop. Next, grab the 120's. Get em up, and press till you have to dump them. Go back to 115, then 110, then 105, then 100. We have 7 sets. Then drop to say 75, and press to failure. There, 8 sets. And, you had to work more and harder. I like to use a pyramid approach to really kil the pecs. You can utilize this approach for many lifts such as squats, dreads, bent over rows etc. You'll be amazed at how quick strength builds from this approach, at least I have been.
If you were doing 4 sets of 10 on lat pulls try 5 sets of 8, same reps but more time. Then go on to 5 sets of 10. Superset with behind the neck pull down to work more lower traps. No break but to move the pin. So, say you're pulling 180 for 8-10, once you complete that set, move the pin to say 120, or even 105, then Do behind the neck pull downs for 8-10 (I have hyper mobile shoulders so this exercise gives me no problems). You've increased intensity, and worked harder in nearly the same amount of time as though you just did lay pills and took a break for 90 seconds.
Look for ways to give yourself more of a challenge. Use supers, tri sets, giant sets, drops and rest-pause to really work both the same muscle groups and antagonist groups (back chest, quads hams, bi tri and the like). Recovery is quicker and strength is increased on cycle. Just remember to keep drinking water!