I've decided to start doing some more cardio then what I usually do on my off days and I have some questions whether post workout cardio would have any negative effects.

Typically, I'm used to having a shake and eating a meal post workout, say within 30 mins. If I add in about 15-20 mins of light intensity cardio after my workouts, I'm afraid I will be losing that small window of time to replenish my body with the essential nutrition that it needs for optimal for muslce growth. I've thought about mixing a shake while at the gym, but it's not too appealing. Would it be ok to do cardio post workout and have a shake/meal afterwards?