Purpose to Protein?

[cure]

Is there a purpose to having a protein shake before an intense workout with weights? I see some people having a shake before and after a workout. I work out at 7:00AM and am up at 5:30AM. When i get up i have 2 packets of oatmeal and an orange juice and i'm off. Once i'm done my workout then i start to consume my proteins. On off days i consume protein with all my meals including my first of the day. What do you guys think?

 

[diamonddiceclay]

you should eat protein every 2and a half hours whether or not you lift that day

 

[Grizzly]

The point is so that your body can gain muscles. Protein is the only thing that is used to make muscles, thus you need to eat it.