Because I do! It’s weird if I go out for an easy spin, it feels harder than if I go out and thrash it!

Anyone else?

I had some testing done on a treadmill last year. Running slowly was harder. Up to a point, the faster I got, the lower my heart rate. I think going too slowly just doesn’t have any rhythm so makes it less efficient.

Nope. I do find it hard to ride slowly, but not tiring.

I think there’s often a ‘sweet spot’ at a certain speed which is often an mph or so faster !

I had some testing done on a treadmill last year. Running slowly was harder.

Yes, yes, but did it take off or not ??

My legs really hurt if I jog – I reckon it’s more bouncy

If you ride more slowly it burns more fat, above a certain level it burns the carbs you’ve eaten. That might be what you are feeling. Warning – I am not trained and have just read some books.