vain (vn) adj. vain·er, vain·est 1. Not yielding the desired outcome; fruitless: a vain attempt. 2. Lacking substance or worth: vain talk. 3. Excessively proud of one's appearance or accomplishments; conceited. 4. Archaic Foolish.
BICEPS - Flat Dumbbell Press: Lie on your back on a weight bench or the floor, dumbbells in both hands w/your knuckles facing the ceiling, elbows making a 90-degree angle. Your feet should be together & your abs engaged (image pulling them back toward your spine). Engage your chest muscles & press the weights toward the ceiling before returning to the starting position. 10 reps x 4 sets