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Intermittent fasting means eating within set time windows while you fast for the rest of the day to help manage weight and health.

A 4.9 40-yard dash works out to roughly 16.7 mph, a solid sprint for high school athletes and many adult players.

On keto, start fasting with short 12–16 hour windows, stay hydrated, keep electrolytes steady, and adjust slowly based on how your body feels.

Track the last calorie you ate and the first calorie you take next, then count the hours between them as your fasting time.

To do intermittent fasting on keto, pick a steady eating window, keep carbs low, plan protein, add salt and fluids, then adjust using clear signals.

Most people feel the urge to pee 15–45 minutes after coffee, with the strongest pull often around 30–60 minutes.

You can stay hydrated during intermittent fasting by drinking water often, adding electrolytes when needed, and using thirst and urine color as cues.

A 4.5 40-yard dash is fast: near 18 mph average speed, and it can meet NFL standards for many roles.

60 km/h equals 37.28 mph, so you’re moving just under 40 miles per hour.

Running 1 mile in 6 minutes means holding a 10 mph pace, or about 16.1 km/h, for a single mile.