A close-up of a U.S. dollar bill featuring historical figures and symbols.
A grassy field under a blue sky with some clouds. Yellow text appears on the left and right sides of the image, including chapter, page, and research information.
Two fitness-related images overlay a background of a sports stadium field. The left image shows a muscular man sitting on the floor in a gym or training space, viewed from behind. The right image shows a man hanging from a pull-up bar in a workout area. Text indicates 'Case Study' and '2024' along with some Italian text, and there are digital audio or editing waveforms at the bottom of each image.
A woman running on a tennis court during daytime, wearing athletic clothes and a visor, with trees and a pavilion in the background.