Here are the possible solutions for ''relax and that's an order '' clue
Answer
Clue
Relevancy
atease
Clue
"Relax, and that's an order!"
''Relax, and that's an order!''
Order to relax
'Relax!' order
breatheinandout
Clue
Expand the intrapleural space, automatically allowing entry through the pharynx and beyond, then allow the diaphragm to relax, contract, and expel contents