They all wouldn't date someone younger than 17.
Louis: 21 Zayn: 20 Liam: 19 Niall: 19 Harry: 19 this is in 2013
Yoga for All Ages - 2013 - 1.2 was released on: USA: 26 April 2013
Yoga for All Ages - 2013 - 1.3 was released on: USA: 3 May 2013
Yoga for All Ages - 2013 - 1.4 was released on: USA: 10 May 2013
Yoga for All Ages - 2013 - 1.5 was released on: USA: 17 May 2013
Yoga for All Ages - 2013 - 1.6 was released on: USA: 24 May 2013
Yoga for All Ages - 2013 - 1.7 was released on: USA: 31 May 2013
Yoga for All Ages - 2013 - 1.8 was released on: USA: 7 June 2013
Yoga for All Ages - 2013 1-2 was released on: USA: 26 April 2013
Yoga for All Ages - 2013 1-3 was released on: USA: 3 May 2013
Yoga for All Ages - 2013 1-4 was released on: USA: 10 May 2013
Yoga for All Ages - 2013 1-5 was released on: USA: 17 May 2013