I'm 5'10". I was 180 lbs in 2008 when I started riding a stationary bike 3X/wk. I was 175 lbs when I started cycle-commuting in 2009. I was 150 lbs by the following November. I tend to gain a few pounds over the winter, but have hovered around 150 for a couple of years now. I'm off the bike altogether for the next six weeks (maybe longer) so I'll have to watch what I eat to prevent my weight from spiking.