I have been riding for years for enjoyment and just two weeks ago started commuting to work The first week, I only rode two days. I have always done about between 10 and 20 mile rides. What I noticed is at the end of the second week when I had rode four days to work, I was exhausted for most of Fri-Sunday, with no desire to ride my bike. I used to come home from work and want to ride and not feel like I was getting enough time on the bike. Before I started commuting I was working out at the gym four to five days a week and always felt like I had energy. Hopefully this feeling of tiredness will passand my love for riding will come back. I do notice I like my ride home better because it is lighter and I can see more of the scenery. Did anyone else feel like this when they first started commuting?