The sun has not yet risen in Senegal's capital, Dakar, but about 100 people in swimsuits and life jackets already crowd a section of beach, ready for aquagym class.
In the chilly Atlantic, 63-year-old Aminata Sall is soon kicking in rhythm with others, foam noodles tucked under her arms. On the beach, people with limited mobility are buried knee-deep in the sand and gently rotate their torsos in a therapy session meant to ease pain.
