Dr. Karl Knopf is the coordinator for the fitness therapist program at Foothill College of California and is the author of many successful fitness and rehab books. He lives in Gilroy, CA.
Resistance Band Workbook-Karl-Knopf-9781612431710 -14.95-Ulysses Press-04/09/2013-13610- Foam Roller Workbook-Karl-Knopf-9781569759257-14.95-Ulysses Press-04/01/2011-44951- Core Strength for 50+-Karl-Knopf-9781612431017-15.95-Ulysses Press-08/21/2012-12218- Make the Pool Your Gym-Karl-Knopf-9781612430140 -14.95-Ulysses Press-02/28/2012-7018- Stretching for 50+-Karl-Knopf-9781569754450 -14.95-Ulysses Press-02/10/2005-26919-