How advanced are your participants, and how often do they attend your class?
While variety is nice, sometime changing too many things at once makes it hard for participants to get a good workout because they’re trying to figure out what you’re asking them to do.
I like Sue’s idea of changing the order of exercises for variety. Another thing I’ll do for a class that I want to keep simpler (not necessarily less intense, just easier for new participants to understand) is to change the exercise timing without changing the exercise. For example, two sets of 45 seconds versus three sets of 30 seconds.
Another thing I’ll do before switching out an exercise is offering a different variation of the same exercise. For example, there are many ways to do push-ups:
1) Regular push-up at client’s own pace for time
2) Push-ups to the count of the instructors’ voice, down 1,2,3 up 4
3) Push-ups to the count of instructor’s voice, down, up 2, 3, 4
4) Slow push-ups
5) Push-ups with wide hands
6) Push-ups with narrow hands
7) Push-ups with right hand at 2:00 and left hand at 8:00, then left hand at 10:00 and right hand at 4:00
8) Push-up with wide feet, jumping jack the feet, push-up with wide feet…
9) Push-up, adduct left foot to touch right heel. Push-up, adduct right foot to touch left heel
10) “spiderman” push-ups
So, you can keep the general class plan the same, but tweak a variation.