Testimonials

We love hearing from our customers about the difference that Inner Strength has made in their lives.  If you'd like to share your experience with others send us your comments at management@performancebyscience.com.

 Here is a sample of some of the e-mails we've received from customers:

"I love the combination of native collagen with functional foods.  This is the product I have been looking for and I can't be happier with the results!"

"Before I discovered Inner Strength I had to limit the intensity and kind of exercises I was doing.  Since using Inner Strength, my recovery is so much better and I have increasingly better mobility and joint comfort."

"I am a self described fitness addict with a history of joint issues due to the frequency and intensity of my workouts.  I have tried everything around and Inner Strength stands out due to its performance and the sound science that backs up its claims.  Better recovery means better performance."

"I had been using glucosamine chondroitin for many years due to my shoulder joint pain.  I was intrigued with the research that showed that the native collagen in Inner Strength worked significantly better and decided to give it a try.  I am so glad that I did."