Hyperbolic stretching is an online, self-paced workout program that promises to help improve flexibility in just 4 weeks. It is a 4-week online program created by Alex Larsson, consisting of a series of online, self-paced videos that are followed for 30 days, with each day involving an 8-minute stretching routine. The program claims to help improve flexibility and strengthen muscles, and it includes PNF stretching techniques, dynamic stretches, and static stretches. The cost of the program is $27, and it comes with a 60-day money-back guarantee. However, there is not enough scientific evidence to fully support the claims made by the hyperbolic stretching program.