Yoga for complete beginners. 

This 20 minute YouTube video provides an introduction to Yoga through a 20 minute ‘home Yoga workout’

https://www.youtube.com/watch?v=v7AYKMP6rOE

Pilates

This short video shows one of the earliest Pilates classes ever and provides a fascinating glimpse into the origins of the discipline: https://www.youtube.com/watch?v=-DG52tULsO8

Pilates Anytime is offering one month's free trial of their online courses: http://www.pilatesanytime.com