midlandsgrimpeur
Über Member
One thing you may notice (as do a lot of people, myself included), it can feel a lot harder than cycling on the rode to begin with. There are various theories as to why this is but it can be quite noticeable. When I first had one years ago it took about 3 months of regular use to be able to get close to my outdoor exertion levels (measured with power). Even today my power levels are about 10% lower than they are on the road. As above, a fan is also a must, unless you want to drip sweat all over the place!