Yes, but only to some degree. Not all dietary protein you eat goes toward protein synthesis. Once you eat enough protein to drive protein synthesis, your body will oxidize protein for energy. Driving your protein intake far beyond the realm of 30-35 percent of your daily calories probably won't provide additional muscle-building benefits, but it will cut into your fat and carbohydrate intake, which may actually hinder your goals. This isn't exact, but eating at least 1 gram of protein per pound per day should cover your bases.
Yes! Users can add video from YouTube or Vimeo with ease:
Enter App Settings
Click the "Manage Questions" button
Click on the question you would like to attach a video to
When editing your answer, click on the video icon and then paste the YouTube or Vimeo video URL
That's it! A thumbnail of your video will appear in answer text box