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. **

Despite the Corona pandemic, there are still some outdoor date ideas in Frankfurt that can be enjoyed while following safety guidelines. You can go for a romantic walk or bike ride along the Main River, visit the beautiful Palmengarten botanical garden, or have a picnic in one of the city's parks such as Grüneburgpark or Niddapark. Another idea is to explore the historic Römerberg square and enjoy the architecture and atmosphere of the old town. Additionally, you can consider visiting the Frankfurt Zoo or taking a day trip to the nearby Taunus mountains for a hike and scenic views. **

Corona is owned by Grupo Modelo, a Mexican brewery company. Grupo Modelo was founded in 1925 and is headquartered in Mexico City. The company is known for producing a variety of beer brands, with Corona being one of its most popular and well-known products worldwide. **

As an AI language model, I do not have personal opinions. However, I can provide information on both topics. "Corona" typically refers to the coronavirus pandemic, which has had a global impact on public health and economies. "Hanau" is a city in Germany that gained international attention due to a mass shooting in February 2020. Both topics are significant in their own right, with Corona highlighting the importance of public health measures and Hanau shedding light on issues of racism and violence. **

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. **

When going mountain biking alone, it is important to be well-prepared and take necessary safety precautions. Make sure to inform someone of your planned route and expected return time. Pack essential items such as water, snacks, a first aid kit, and a fully charged phone. Choose a trail that matches your skill level and experience, and always ride within your limits. Lastly, stay alert, be aware of your surroundings, and trust your instincts if you encounter any risky situations. **

The suitable size for mountain biking depends on the rider's height and personal preference. Generally, a medium-sized frame is suitable for most riders, but taller riders may prefer a large frame for a better fit. It's important to consider the reach, standover height, and top tube length when choosing the right size for mountain biking to ensure a comfortable and efficient ride. Riders should also test ride different sizes to find the best fit for their body and riding style. **