Share on Pinterest The 12-3-30 treadmill challenge is trending on TikTok, but can the viral workout really help you lose weight? M_a_y_a/Getty Images TikTok users claim the 12-3-30 treadmill challenge ...
It’s no secret that adding cardio into your fitness routine is a sure-fire way to increase that heart rate, burn more calories and build endurance. But when it comes to choosing a low-impact option ...