Men's activewear has come a long way from the days of baggy sweatpants and ill-fitting t-shirts. Today, there's a wide variety of stylish and functional pieces to choose from, whether you're hitting the gym, running errands, or just lounging around at home.

Here are some of the essential pieces of men's activewear:

• Tank tops: Perfect for hot weather workouts or layering under a sweatshirt.  
• Sweat shorts: Comfortable and versatile, they can be worn for workouts, running errands, or relaxing at home.  
• Sweatpants: A must-have for lounging around or warming up before a workout.  
• Swimwear: Choose a style that fits your body type and activity level.
• Running shorts: Lightweight and breathable, they're perfect for running, jogging, or other cardio activities.  

When choosing activewear, it's important to consider the type of activity you'll be doing and the climate you live in. You'll also want to choose fabrics that are breathable, moisture-wicking, and comfortable to wear.