Learning about new ways to improve my body and wellness in general will always pique my interest. Need a new anti-aging regimen to test out? Enter collagen. The amino acids found in this protein are useful for building muscle, keeping up strong bones and benefitting your skin, hair and connective tissue. Since the amount of collagen your body produces naturally wanes as you age, taking collagen supplements or using collagen creams is becoming more and more popular -- as long as you do your research. Do you know the basics of what’s going on, though?