Protein

Go 'beyond the nutshell' at https://brilliant.org/nutshell/ and dive deeper into these topics and more with a free 30-day trial! This video was sponsored by Brilliant. Thanks a lot for the support! Sources & further reading: https://sites.google.com/view/sources-impossible-machines/ You are cells. Your muscles, organs, skin and hair. They are in your blood and in your bones.