Your gut doesn’t know that you have a deadline. It only knows the state your body is in. When you are constantly rushing, worrying, eating quickly, sleeping poorly or staying mentally switched on, digestion may not be your body’s priority. This is where the autonomic nervous system matters. The sympathetic system helps you act, focus and respond to stress. The parasympathetic system supports rest, digestion, recovery and elimination. You need both. The goal isn’t to “activate the vagus nerve” all day. The goal is autonomic flexibility, being able to move into action when needed and return to recovery when the threat is gone. Slow diaphragmatic breathing, humming, walking, adequate sleep and eating in a calmer state are simple ways to practise this. Sometimes improving digestion starts before the first bite. You don’t just digest food. You digest it in a physiological state.

We talk a lot about metabolic flexibility. But there is another flexibility we don’t talk about enough: Autonomic flexibility. Your body needs to move between: Sympathetic which is action, focus, alertness Parasympathetic which is rest, digestion, recovery Neither is “good” or “bad.” You need sympathetic activation to exercise, work, respond and perform. You need parasympathetic recovery to eat, digest, sleep and repair. The problem is not sympathetic activation. The problem is losing the ability to shift gears. A body that can respond to stress and then come back to calm has better regulation. This is why simple practices such as slow diaphragmatic breathing, humming, walking, good sleep and eating without rushing can matter. Not because they are magic “vagus nerve hacks.” Because we are training the body for flexibility. Just as metabolic flexibility is the ability to switch between fuel sources according to demand, autonomic flexibility is the ability to shift between activation and recovery according to demand. Health is not about staying in one state. Health is the ability to adapt.