Karl Knopf

Books
Core Strength for 50+ Core Strength for 50+
Core Strength for 50+
2012
Stretching for 50+ Stretching for 50+
Stretching for 50+
2017
Weights for 50+ Weights for 50+
Weights for 50+
2005
Kettlebells for 50+ Kettlebells for 50+
Kettlebells for 50+
2012
Resistance Band Workbook Resistance Band Workbook
Resistance Band Workbook
2013
Heal Your Frozen Shoulder Heal Your Frozen Shoulder
Heal Your Frozen Shoulder
2017