I read about this awhile back and had almost forgot about it......added it to my quad workout tonight and remembered why I liked it so much.
It goes like this:
U will do a set for 20 reps total........5 full reps, 5 lower half reps, 5 upper half reps, 5 full reps = 20 reps.......that's one set......only do about 2-3 sets for larger muscle groups and 1-2 sets for smaller muscle groups....it works well on most exercises.