Yoga herbs

FLEXIBILITY

• Turmeric
• Saffron
• Guggul

STAMINA 

• Ashwagandha
• Shatavari
• Amla
• Licorice

U get them in pill forms marketted by most ayurvedic giants.  I started on Amla as a better substitute for celine (Vitamin C) after the knee injury. Vitamin C is a miracle nutrient that way. I always use it when I have to heal, be it from some infection or while recovering or a sudden injury. And of course, when I am stressed.
The skin also glows from Vitamin C simply because it reduces inflammation inside (this causes a lot of damage) and because it is an antioxidant -- repairing agent.