The diaphragm can be exercised by anything that simulates a crunch.
Down climb weight lifting
Various abdomen exercises
Alternately, you can merely practice breathing to further strengthen the diaphragm. Long consistent breathing in and out.
Combine breathing with lifting and crunching (variations) for full effect.
Indeed the diapragm is connected to those abs. Making the core more important for exercising the diapragm.
“Never Ending Study”
-Beyond Muscle
Down climb weight lifting
Various abdomen exercises
Alternately, you can merely practice breathing to further strengthen the diaphragm. Long consistent breathing in and out.
Combine breathing with lifting and crunching (variations) for full effect.
Indeed the diapragm is connected to those abs. Making the core more important for exercising the diapragm.
“Never Ending Study”
-Beyond Muscle