We’d like to know about your indoor training habits

The way I treat indoor riding is the same as I treat the gym, keep it short and sweet but do it regularly. This way you limit boredom and will reap the benefits which will see you hitting the spring trails without the winter weight and heavy legs. 

I'm certainly in the 'bikes are for outside' camp. Turbo trainers can be really effective ime but for me they're a tool for fine-tuning fitness for something specific, they don't replace riding outdoors. I'd rather be out in the damp and grey for a couple of hours than using a trainer.

I have an old trad trainer, a HRM, an over/under threshold session that get results if I stick at it once a week for 8-12 weeks and a playlist of techno or thrash metal that works. Simple stuff. But I need to be motivated by something in the first place otherwise my regular riding is enough to keep a reasonable form, I'd rather do hill reps or a hilly loop than an interval session and I reckon it's almost as effective overall.