Calf stretch, Soleus stretch, the Gastrocnemius stretch vs four other plantar flexors of the ankle. The reason that you are not able to have full foot and ankle flexibility is due to improper stretching of the plantar flexors of the ankle. To properly stretch your plantar flexors, you should work on
Assess Your Injury Risk For Running (Part 2) - Measuring Lower Leg
Biology, Free Full-Text
Calf Flexibility Sans Stretching: Don't Stretch Your Calves - Sock
Calf Stretch: The right way of stretching your calf and why you
What Causes Tight Ankles? How to Improve Your Ankle Mobility
Move Beyond Stretching for Tight Calves
Can You Pass the Flexibility Test? - The New York Times
Calf Stretches: 6 Simple Stretches To Improve Your Calf Flexibility!
IEKEODI Foot and Calf Stretcher-Stretching Strap,for
DMoose Calf Stretcher & Foot Stretcher for Plantar Fasciitis
Calf stretch - Mayo Clinic
ElasticSteel
Easyflexibility - Stretching Made Easy