I did an outdoor work out today. I warmed up with a half hour bike spin, then I did two sets of 10 with the eight pound dumbbells and two sets with the 20 lb dumbbells. I can only do 5 reps with the 20 pounders till I fail, but maybe I will get it in the next week or two. Dumbbell training will make it easier to start my lawnmower next spring. I like to do dumbbells when its cool, but when it gets warm I will do more bike riding. Dumbbells are a great way to build upper body strength. Biking does work the upper body a little, but not as good as dumbells! It is a very good way to cross train. I can't prove it, but I think that having good upper body strength makes me better on the bike too.