Set the bike before you clip in
Most knee discomfort in home spin classes starts with a saddle that is too low. At the bottom of the pedal stroke, your knee should have a slight bend, roughly 25 to 35 degrees, not a deep flex. Raise the saddle in small increments and check that your hips do not rock when you pedal. If you are still comparing bikes, the setup guidance at holspin is a useful cross-check for saddle and handlebar adjustment before your first ride.
Takeaway: fix height first; resistance second.
Minutes 0-5: ramp instead of racing
The common beginner error is treating the warm-up as a race. The cause is simple: low resistance feels effortless, so cadence climbs too fast and form collapses later. Ride for five minutes at a cadence of 80 to 90 rpm and an effort you could hold while talking in short sentences. Keep your shoulders down and your grip loose. By the end, your breathing should be deeper but still controlled.
Minutes 5-15: three controlled efforts
Use the middle ten minutes for three two-minute efforts separated by one minute of easy spinning. Aim for a cadence of 85 to 95 rpm and an effort around 5 or 6 out of 10. If your hips bounce, add one or two resistance increments rather than pedalling faster. The target is smooth pressure through the whole stroke, not a frantic sprint.
- Effort one: settle into rhythm; no standing.
- Effort two: keep the same cadence with slightly heavier resistance.
- Effort three: hold form even as breathing deepens.
Takeaway: control beats speed in the first month.
Minutes 15-18: stand without wrecking form
Standing climbs are useful only when resistance supports them. The cause of sore knees in standing sections is usually too little resistance, which lets the pedal drop away under your weight. Add one or two increments, lift your chest, and stand for 30 seconds at a time at 70 to 80 rpm. Sit down before your hips start swinging.
Minutes 18-20: cool down and log one number
Finish with easy spinning and relaxed breathing. Record one metric only: average cadence, peak effort, or how controlled the final interval felt. Next session, repeat the same structure before adding time. If the same effort feels easier and your knees remain quiet, progress by adding one minute to the middle block, not by turning every ride into a test.