Use The Bands Combine the Quantum Adjust-a-Stretch with the included 35lbs resistance bands for a great workout. Relieves Tightness & Pain When used as a stretching aid, it helps to relieve and prevent plantar fasciitis, tight hamstrings, calf strain, shin splints, achilles tendonitis, heel pain, physical fatigue and more! The Perfect Yoga Aid Perfect for yoga, strength training and general fitness routines.