One can make a mountain bike lighter by using lighter materials for the frame, such as carbon fiber or titanium, which are stronger and lighter than traditional steel. Additionally, using lighter components such as handlebars, seat posts, and wheels can also reduce the overall weight of the bike. Finally, removing any unnecessary accessories or components that are not essential for the bike's performance can further reduce its weight. **

The calorie expenditure for road cycling and mountain biking can vary based on factors such as intensity, terrain, and duration. Generally, road cycling on flat terrain at a moderate pace can burn around 400-600 calories per hour, while mountain biking on varied terrain with hills and obstacles can burn around 500-800 calories per hour. The higher calorie expenditure in mountain biking is due to the increased effort required to navigate the challenging terrain and obstacles. Overall, mountain biking tends to result in a higher calorie expenditure compared to road cycling. **

Whether or not you should stop mountain biking depends on your personal circumstances and reasons for considering stopping. If you are experiencing physical pain or injury from mountain biking, it may be wise to take a break and seek medical advice. If you are feeling burnt out or no longer enjoying the activity, it may be beneficial to explore other forms of exercise or outdoor activities. Ultimately, the decision to stop mountain biking should be based on your own well-being and enjoyment. **

It depends on the situation. Lighters are convenient and easy to use, but they can run out of fuel. Matches are a reliable backup option, but they can be affected by wind and moisture. Ultimately, it's a matter of personal preference and preparedness. **

Mountain biking is all about the thrill of exploring rugged terrain, challenging yourself physically and mentally, and connecting with nature. It's about pushing your limits, feeling the rush of adrenaline as you navigate steep descents and technical obstacles, and enjoying the freedom of riding through breathtaking landscapes. Mountain biking is also a community of like-minded individuals who share a passion for adventure and the outdoors, and it's a way to escape the hustle and bustle of everyday life and immerse yourself in the beauty of the natural world. **

A stoner is someone who regularly uses marijuana or other drugs, a lighter is a small device used to ignite a flame, typically for lighting cigarettes or candles. The question "Stoner, lighter or what?" seems to be asking whether someone identifies as a stoner, uses a lighter frequently, or something else entirely. It could be interpreted as a playful way to ask about someone's habits or preferences related to drug use or smoking. **

The Dupont lighter series is known as the "Ligne 2" series. This series is one of the most popular and iconic collections of luxury lighters produced by Dupont. The Ligne 2 lighters are renowned for their elegant design, high-quality craftsmanship, and reliable performance, making them a favorite choice among collectors and aficionados of fine smoking accessories. **

Without further information, it is impossible to determine if the lighter is empty. If the lighter is transparent or has a visible fuel level indicator, it may be possible to determine if it is empty. Otherwise, the only way to know for sure is to try to use the lighter and see if it produces a flame. **