Two key items you must have in your gym bag are a workout shirt and bottom. Make sure the fabric is breathable and well-fitted. Think about what you are going to be doing that day; you wouldn't want your low-hanging pants to slip down when you're doing a squat or your shirt to fall over your face when you're bending over in yoga. Go for quality and usefulness over fashion.  Decide if you would like to wear tank tops or short sleeve shirts, along with workout shorts, tights, or pants. It doesn't matter as long as you keep in mind your fitness regiment. For colder months, pack a jacket and track pants. This is especially essential if you plan on walking out of the gym still wearing your gym clothes. It's a good idea to pack extra underwear, especially if you are going straight to the office. You don't want to put on your nice, clean work clothes over sweaty underwear.  Ladies, you might want to pack a sports bra if you're planning on wearing your normal bra to the gym. Good shoes are essential for working out. Most gym goers can wear trainers or running shoes. If you are an advanced weight lifter, you may want lifting shoes instead. Regardless of the shoes you wear, make sure you pack them. Trying to run on the treadmill in your work heels or loafers would probably not work very well.  Don't forget the socks. Working out without socks would be gross and painful. Make sure to always have a pair of socks in your bag, even if you have worn a pair to the gym. You never know when your socks are going to slide down in your shoes, get wet, or have something else happen to them. Socks are essential items in your gym bag.  Make sure to bring flip-flops. Flip-flops are a must have if you are showering at the gym after your workout. You should never place your bare feet on the shower floor; instead, wear flip-flops to protect your feet from bacteria and fungi. For women, hair ties are necessary for keeping your hair pulled back and out of your face during workouts. For men or women with short hair, headbands or sweatbands...

How would you rephrase that briefly using Vietnamese?
Sắp quần áo tập loại chất lượng tốt. Mang theo giày thể thao. Cầm theo vài sợi dây buộc tóc hoặc băng đô chặn mồ hôi. Mang theo tất cả đồ dùng vệ sinh cá nhân thiết yếu. Mang theo khăn tắm. Mang theo bình nước. Mang theo đồ ăn nhanh. Đừng quên mang theo thiết bị điện tử. Nhớ mang nước sát khuẩn. Đừng bỏ qua dụng cụ sơ cứu.