January 26, 2026 · 3 min read

Why "Aimless Spinning" Blocks Your Winter Cycling Progress

An hour on the trainer "just to spin something" feels like you're doing something for your fitness. The problem: the body doesn't respond to time spent on the saddle — it responds to a specific stimulus. Without a purpose to a given ride, a whole winter can pass with no real progress at all, despite dozens of hours on the bike.

Why riding at random doesn't build fitness

Training adaptation works on progressive overload — the body needs a stimulus clearly different from what it's already used to. Riding "by feel", always at a similarly moderate intensity, quickly stops being a stimulus — it becomes a routine the body has already adapted to. The result: the hours pile up, form stays flat.

Two traps of aimless spinning

• Permanent medium pace — not easy enough to build an aerobic base without fatigue, not hard enough to raise your threshold. Classic "grey zones" that eat up time with no clear effect in either direction.
• Random hard days with no plan — riding flat out whenever you happen to feel strong, with no connection to the rest of the week. Leads to fatigue without systematically building any specific capacity (threshold, VO2max, endurance).

What a plan gives you that chance can't

• A specific goal for every ride — aerobic base, threshold, VO2max or recovery. One ride, one clear stimulus, not a little bit of everything at once.
• Periodisation — weeks of building load alternating with recovery weeks, instead of a flat line of the same effort all winter.
• Measurable progress — if you know how much TSS you've done and how your CTL is rising, you see progress in numbers, not just in a subjective "I think it's better". More on reading this data in our article on TSS.

You don't need a complicated plan right away

It's not about having every minute of winter perfectly scheduled. It's enough for every ride to have one clear goal — "today is base", "today is threshold intervals", "today is easy, because yesterday was hard". If you're just starting out, we covered a simpler starting point in our beginner's guide — and if you're looking for what to focus on instead of tracking everything at once, check our article on cycling minimalism.

The effect after winter

The difference between "I spun 200 hours this winter" and "I followed a plan with clear progression" shows up in spring — not in the number of kilometres ridden, but in how much your FTP actually rose and what your power curve looks like at the start of the season.

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