The human muscular system is complex and has many functions in the body, like mobility and stability. Learn more about the muscular system here.

Explore celebrity trends and tips on fashion, style, beauty, diets, health, relationships and more. Never miss a beat with MailOnline's latest news for women.

Michael Tanenbaum is a senior staff writer for PhillyVoice, with interests ranging from technology and behavioral health to local community initiatives and cultural life. Michael has written for ...

Chipolo's One and Card Point trackers are great options for Android users who want to keep tabs on their phone and wallet.