Mertens has kept fit during this time of self isolation by putting an ab workout; onto her Instagram page for her followers.
She asked her followers what they wanted to see during this time away from the court; they resoundingly said they wanted the workout.
The Belgian gives five workouts that can be done at home; with the absence of gyms in many countries due to current lockdown restrictions.
View the video below:
https://www.instagram.com/p/B-KB9G-JOq_/