Thanks Carbonfiberboy, I checked out The Time Crunched Cyclist; I will order it - also to give my training routine some more focus. Up till now I thought that just making a lot of hours on the bike would improve stamina, power and strength. A ride with a colleague, who already is training seriously for years, showed immediately that I am still in the "wussy" area. Don't mind that, but I hoped that my training efforts past year should have resulted in more improvement. Maybe the interval training will help me to deal with that . And save a bit of time to check out BF ;-)