Multifocal intraocular lenses and refractive lens exchange
Don't trade a healthy lens for a multifocal. Readers don't give you haloes.
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Scheduled screen breaks
Ditch the 20-second stare. Get up and leave the screen when your eyes sting.
Omega-3 fatty acid supplementation
Stop taking fish oil for dry eyes. Put the money into drops.
Antioxidant and carotenoid supplementation in eyes withou…
Bin the eye vitamins. Healthy eyes get nothing out of them.
External nasal dilator strips
Don't buy nasal strips for training. Your mouth is doing the breathing anyway.
Mouth taping during sleep
Don't tape your mouth shut until a sleep test says you're clear.
Nasal-only breathing during exercise
Nose-only on easy days. Open your mouth the moment it gets hard.
High-resistance inspiratory muscle strength training
Do 30 hard breaths a day, then judge it on your own cuff at six weeks.
Inspiratory muscle training
Do 30 breaths twice a day on the trainer if you race. It's the legs that gain.
Static apnea tables and breath-hold training
Do your breath-hold tables on the floor. Never in water, never after hyperventilating.
BOLT score as a CO2-tolerance measure
Stop training your BOLT score. It tracks nothing you actually care about.