Take a neutral grip on the parallel bars, hands underneath your shoulders, arms straight, & triceps engaged.
Depress & protract your scapula, round your back (drive your shoulder down away from your ears, and spread your shoulder blades)
Position your feet slightly in front of you, tuck your knees tightly, & raise them as close to your chest as possible.
From here extend both legs out in front, squeezing your quads and pointing the toes. Maintain straight arms and keep both both legs elevated as you perform flutters for time.