It is very easy, once you have had success, to keep using the same sub set of exercises, or perimeters, but what is also important is the continued variability of stimulus. Yesterday I taught a group of football players to row, and used the rowing machines to do some sprint intervals. Although they are well versed in sprint intervals, the slight change in modality made a world of difference. If one method doesn't work, find a new way to achieve the goal. If the way you are doing something works, periodically change it up to force your body to adapt.
-- In Strength
