Modern trainers handle it just fine. I used to be a professional cyclist and would log about 20 hours inside/week during winter. You can also get a roller with

Modern trainers handle it just fine. I used to be a professional cyclist and would log about 20 hours inside/week during winter. You can also get a roller with resistance, that is probably the best investment I ever made. For people in the US I recommend http://www.insideride.com/ http://www.insideride.com/ and in Europe the equivalent is this: https://www.elite-it.com/en/products/home-trainers/rollers/quick-motion https://www.elite-it.com/en/products/home-trainers/rollers/q...