A question often arises about what to do with an already existing diastasis.
First, learn to control the degree of abdominal tension. You need to carefully, in tiny ranges, activate the rectus abdominis muscle while preventing any noticeable activation of the oblique abdominal muscles, which inevitably engage in the spinal flexion process because their aponeuroses (flat tendons) converge right along that same linea alba that has already been damaged. And being overly active, they can continue to negatively affect its condition.
How to do this?
Lying on your back, place your palms on the sides of your abdomen under the ribs. Try to feel the muscle tone with your fingers (it should be minimal).
Next, perform a moderate (in the range of 1-3 cm) spinal flexion — essentially, simply lifting your head off the floor is enough.
Continue using your fingers to assess the tone of the oblique abdominal muscles. And if you suddenly feel a clear activation of this area, you must stop the flexion phase and return to the position where you feel the maximum possible tension in the rectus abdominis with minimal tension in the obliques.
Make sure to accompany this moderate flexion (1-3 cm!) with activation of the lower third of the transversus abdominis muscle.
Unfortunately, a trainer does not have the right to address surgical interventions, as they can vary greatly — from muscle layering to the placement of a polymer mesh that eventually grows into the tissues and becomes part of the person's body. Post-surgical recovery recommendations must be provided by the treating physician.