The first silhouette can be unisex and shows an obese person standing and looking at something in his/her hand.
The second silhouette is of a woman wearing a cap. She also tends to be obese, with the weight distributed unevenly, on the bottom half of her body.
You might also like: Obesity statistics of the world
Or more related images: Sketches and images of feet on a weighing machine or try the label Silhouettes or the label Sketches for more silhouettes and sketches of people with bags and people at different activities.
Or check out photos of Gymnasium and training equipment or for actual photographs of obesity like found here: Images of overweight people