I hear people complain and I have said it myself, "Weight lifting takes too long - I don't have time for 3 sets of 10." This then evolves from a complaint into an excuse, and no strength training happens at all.

Well, here's a new technique to try and I think it is virtually excuse proof. You let me know about that below in the comments section - OK?

Research shows that a single set of 12 repetitions with the proper weight can build muscle just as efficiently as can three sets of the same exercise. The trick is you need to be using a weight that really challenges your muscles in those dozen reps. You need to feel like you really couldn't lift the weight again for a thirteenth repetition. Less reps will cut down on your lifting time tremendously.

Fit's tip: If you are just beginning with weight lifting, start slowly and find a weight that you can lift 12 times. Once you can easily do 12 repetitions with a particular weight, increase the weight by up to 10 percent at a time.