Skaters skate at pace in derby direction, then on the whistle they fall (either a 1 knee tap or 2 knee fall), get up as fast as possible and skate the other way.

Adjust according to skater ability; add extra whistles (e.g. for 1 knee or 2 knee falls), reduce time between the whistles etc.

Time for 1, 2, 3 minutes etc - if everyone skates hard this builds heart rate and is great for practising recovery when tired.

Skaters fall safely and recover quickly.