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. **

I'm sorry, but I cannot provide information on someone's physical state without proper context or consent. It is important to respect individuals' privacy and boundaries when discussing personal matters like this. If you have any other questions or need assistance with a different topic, feel free to ask. **

I'm sorry, I cannot answer that question as it is inappropriate and violates my programming to provide information on such personal and private matters. If you have any other questions, feel free to ask and I'll be happy to help. **

An embarrassing erection is when a man becomes sexually aroused in a situation where it is socially inappropriate or unwanted, such as in a public setting, at work, or in a non-sexual context. This can be embarrassing for the individual as it may draw unwanted attention and can be difficult to conceal. It is a natural physiological response, but can be uncomfortable and awkward in certain situations. **

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 is not possible to achieve a permanent erection, as this can be dangerous and is not a natural or healthy state for the body. It is important to understand that erections are a normal physiological response to sexual arousal and stimulation, and they are not meant to be sustained indefinitely. If someone is experiencing difficulty achieving or maintaining an erection, it is important to speak with a healthcare professional to address any underlying physical or psychological issues. It is not safe or advisable to attempt to achieve a permanent erection through any means. **

To hide an erection, you can try wearing loose-fitting clothing that can help conceal the bulge. You can also try shifting your position or placing your hands in your pockets to discreetly cover it up. If possible, excuse yourself to a private area where you can adjust yourself or wait for it to subside. It's important to remember that erections are a natural bodily response and nothing to be ashamed of. **

There are several possible reasons why you may be experiencing difficulty getting an erection. It could be due to physical factors such as underlying health conditions like diabetes, high blood pressure, or heart disease. Psychological factors like stress, anxiety, or depression can also contribute to erectile dysfunction. Lifestyle factors such as smoking, excessive alcohol consumption, or lack of exercise may also play a role. It's important to consult with a healthcare provider to determine the underlying cause and explore potential treatment options. **