how to improve flexibility after 50, how to increase flexibility, regaining flexibility after 50

Stretching exercises for improving flexibility is one of the most overlooked and underestimated parameters of health and fitness.
I would appreciate a QUICK reply, so that I go ahead and place order.
http://www.fitnessover50plan.com/2016/10/19/how-to-improve-flexibility-over-50/
how to improve flexibility after 50, how to increase flexibility, regaining flexibility after 50