The stability of true wireless earphones can vary depending on the specific product and its fit in your ears – but the Beats Powerbeats Pro earbuds are rated as being great for intense workouts. Factors such as the shape of your ears, the design of the earphones, and your activities can influence their stability. It’s recommended to try different ear tip sizes, consider earphones with additional stability features like ear hooks or wingtips, and adjust the placement in your ears to achieve a more secure fit.