• I think you just have to be careful about gradual burn-out. If you make sure you eat something mid/high glycaemic immediately after arriving at work, you're less likely to set off on the way home short of calories, thereby further depleting glycogen stores. And a coffee before leaving in the morning will kick-start your metabolism and facilitate more efficient burning of fat stores during the morning ride.

    I'm currently doing 3 miles a day total, 5 days a week. If I wanted to get fitter & stronger, I'd do a 40-70 mile ride at the weekend, and one intensive workout mid-week, focussing on strength, which for me is typically a 30 min turbo session, half of which is warming up and warming down.

    If you wanted to incorporate something similar into your commute, it's best done in the afternoon (less risk of injury), and in the second half of your ride (less risk of injury again), and could involve something like standing starts from traffic lights, or standing/seated surges from slow speed to the point of spinning out.

    Blimey, I went on a bit.

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