Orite today I worked Chest and found a great way to warmup and really pump the pecs full of blood and get a great stretch. This is nothing fancy and some of you may be already doing this.
Here is how I do it:
Start a set of cable crossovers with a moderate weight...do about 10 reps and concentrate on using your pecs to move the weight...squeeze your pecs, do the reps slowly...this should burn real bad since your muscles are cold.
After you finish the first set of 10, do not let go of the handles. While holding on to the handles, walk forward (away from the machine) and allow your arms to go back (as in the bottom part of a flye). Let your arms go back as far as you can...hold the stretch for like 30 seconds.
Walk back to the starting position of the crossover and do another 10 slow, concentrated reps. After the ten reps, walk forward (away from the machine) and stretch your pecs for another 30 seconds. Repeat this like 4 or 5 times...never let go of the handles...you should be either stretching or filling your pecs with blood for like 3-4 minutes straight.
This is great to me becasue I start my chest workout with a huge pump and my pecs and shoulders are really loose and stretched... it takes less than 5 minutes. Also, I think that this warms you up better than doing light sets of your first exercise ( which is usually bench). Try it next time you work chest.