Should I take a protein shake after my cardio/fat-burn workout? Should it be the same as the one when I lift?

I currently take 1.5 scoops of Pro-Rated protein + 1 cup skim milk for my PWO and eat grapes. After my cardio today I did 1 scoop and 1/2 cup skim milk.

I didn't know if it would negatively effect my fat-burning. Any suggestions? Thanks.

John Berardi seems to think so...

Unfortunately for our endurance friends, the prognosis isn't as good as it is for the muscle bound. Immediately after an endurance-training bout, muscle protein balance is very negative because there's both a big increase in protein breakdown and a big decrease in protein synthesis.

This situation, however, isn't as quickly reversible as it is in our muscle heads. In these athletes there remains a large negative protein balance for 8 hours or more after endurance exercise (2). Uh, say goodbye to the muscle!

The current recommendations for endurance athletes have therefore changed to include protein. Eating every 2 hours is still recommended, but now endurance athletes are encouraged to consume 0.8 g of carbs per kg of bodyweight in combination with 0.4 g of protein / kg of bodyweight. This means that a 154 lb endurance athlete should be consuming 56 g of carbs and 28 g of protein at each meal: right after training, and 2, 4, and 6 hours after training.

You can read the full articles here:

http://www.johnberardi.com/articles/nutrition/puzzle_1.htm
http://www.johnberardi.com/articles/nutrition/puzzle_2.htm

http://www.bodybuilding.com/fun/satter2.htm

read BOTH parts!
it will change what you think cardio does!! not just fat-burning anymore