In a fitness stream, the host is typically a fitness instructor or personal trainer who is leading viewers through a series of exercises. The stream may be live or pre-recorded, and it may be hosted on a variety of platforms, including social media, YouTube, or a dedicated fitness app.

During the stream, the host will typically demonstrate each exercise and provide instructions on how to perform it correctly. Viewers are encouraged to follow along and perform the exercises in real-time, with modifications provided for different fitness levels or any injuries or limitations.

The exercises themselves may vary depending on the focus of the stream, but they may include a combination of cardio, strength training, and flexibility exercises. The host may also incorporate equipment such as resistance bands or weights, or use bodyweight exercises only.

Throughout the stream, the host may provide tips on proper form, breathing techniques, and ways to modify exercises to increase or decrease their intensity. They may also offer motivational cues and encouragement to keep viewers engaged and motivated.

Overall, a fitness stream is a great way for viewers to get a guided workout from the comfort of their own home, and can be a convenient and cost-effective alternative to in-person fitness classes.