Today is a strength rest day. Spend some time on mobility and get ready for ONE of the following workouts:
Run 4 to 6 x 800m @ fast but consistent pace. Maintain 3-5 seconds of each. 2 min recovery between.
Row 4x1000m rest 2 minutes between each effort
Ski 4x500m with 2 minutes rest between.
Good luck and post results to comments!!