My shoulder has been bothering me, so I've had to cut down on my tennis recently. As an alternative, I've started doing a lot of long distance running, I've decided to run run the London marathon next year. Although my fitness is decent, especially for tennis, I found that my muscles were getting pretty tired. I'm generally running 15km on a treadmill 2-3 times a week. I've been recommended to start drinking protein shakes after my run, not necessarily the ones for muscle growth but more for recovering from exercise.
Just wanted to ask if anyone uses them, and their opinion on them. Cheers