One of my favorite fitness influencers is Whitney Simmons, a YouTuber and Gymshark athlete known for her cheerleader-like charm, down-to-earth life chats, and killer (but achievable!) workouts.

If you haven't heard of Meggan Grubb, have you ever even done an IG live workout? The 25-year-old personal trainer's followers (now nearing the 1.5 million mark) couldn't get enough of her regular ...