When outdoor training is impossible this indoor training (roller training) session could be a good alternative. Great to improve your pedal technique while you’re doing some extensive riding.
Try to keep the pedal frequency high and the movement smooth. Time will fly!
15min warming up
1min right leg, 1min both legs, 1min left leg, 1min both legs
2mins R, 1min both, 2mins L, 1min both
Work up until 5 minutes and go the same way back
15min cooling down
You can play with the time as long as you can keep pedalling smoothly.