Its 7 30 in the morning on the Carnsgar beach.
A few meters from shore nearly two dozen people clutch pool noodles
working out in water thats actually 20 degrees Celsius.
Its part of the dolphin clubs aqua gym which also includes exercise on the beach.
Ahamdoy comes here four days a week before heading to work.
At first I was a little skeptical because it was cold it was winter.
Once I came I gave up all the other sports.
Now Im only doing water aerobics.
Aqua gym has many virtues.
It helps build strengths and improves circulation.
And its slow impact is easy on joints encouraging recovery from injury or illness.
We have people from seven to ninety years old.
So we have grandfathers and grandmothers who come to keep in shape or who have minor ailments.
They come especially in summer when the water temperature is more acceptable.
Dr Nganbai suffered a stroke almost a year ago impairing his balance and speech.
But after the 61 year old pediatrician discovered aqua gym he made tremendous progress.
At first it was difficult to work, now I work independently I have even started driving my car again.
After a month in bed the dolphin clubs aqua gym classes allowed him to meet new people,including some who have gone through similar ordeals.
Seventy-year-old Ibrahimosonko also had suffered a stroke.
He is among individuals with reduced mobility were trained by coach Allison.
Before nothing was moving, now its okay,all the joints are responding, hes doing much better.
Before he didnt speak, now he can speak, we thank the good god.
Participation in the dolphin club is much less expensive than in private pools in Senegal,costing ten thousand siege francs or less than twenty dollars a month.
Classes six days a week benefit the able-bodied as well as individuals with more challenges.
Alison Lycogo Fernandes for voa news Dakar Senegal