1. Ergonomic office chairs can improve posture, reduce back and neck pain, and increase comfort and productivity. They can also help prevent long-term health issues such as carpal tunnel syndrome and spinal problems.

1. The weight capacity of an office chair varies depending on the chair's design and construction. Most office chairs have a weight capacity of around 250 to 300 pounds, but some chairs can support up to 500 pounds.

1. To adjust your office chair, start by adjusting the seat height so that your feet are flat on the floor and your knees are at a 90-degree angle. Then adjust the lumbar support to fit the natural curve of your spine, and adjust the armrests to support your forearms comfortably. Finally, adjust the backrest tilt to a comfortable position.

Yes, many office chairs can be recycled. Check with your local recycling center or waste management company for guidance on how to properly dispose of your old office chair.

1. An ergonomic office chair with adjustable lumbar support and a comfortable seat cushion is typically the best option for back pain. Look for chairs with features such as adjustable seat height, tilt, and armrests, as well as breathable fabric or mesh for improved comfort and support.

The price of an office chair can vary widely depending on the quality, features, and brand. A basic office chair can cost as little as $50, while a high-end ergonomic chair can cost several hundred dollars. It's important to consider your needs and budget when choosing an office chair, but investing in a high-quality chair can provide long-term comfort and support.