Most of the work is being done by your leg muscles, but the upper body sees some activity as it keeps you balanced and upright.
Pretty much, but the ones that sees most use are those in your legs.
Mainly lower body muscles - legs, feet etc. But the upper body does get some use.
Because that's what muscles do. If you use them hard, they grow stronger.
To prevent or alleviate lower back pain while riding a mountain bike, you can adjust your bike's fit to ensure proper posture, strengthen your core muscles, maintain good riding technique, take breaks to stretch, and use proper biking gear like padded shorts and a comfortable saddle.
To improve balance while riding a bike, practice regularly to strengthen core muscles, focus on keeping a steady pace, and use proper posture and technique. Additionally, consider adjusting the bike's seat height and handlebar position to ensure a comfortable and stable riding position.
gravity and pull
Any sport that includes running/walking/cycling will use your calf muscles. Riding a bike every day is also a good way to strengthen your calves.
100%
well it depend what you mean i can kind of controll it voluntary or involintary i do it involuntary when riding but starting i do it voluntary for most people ints voluntary
To protect your bike from rain while riding, use a bike rain cover. This cover is designed to shield your bike from water and keep it dry during wet weather conditions. Simply wrap the cover around your bike before riding to prevent water damage.
When riding a small bike, wear a helmet, follow traffic rules, stay visible, use hand signals, and check your bike regularly for maintenance.
Your question is not entirely clear. Does the person who is riding your bike in Texas have your permission to ride the bike, or did this person steal it? If he did steal it, and you have theft insurance, you may make a claim. Did this person have an accident while riding your bike in Texas with your permission? If so, you would have to check the provisions of your policy to see if it covers other people than yourself who use your bike. Not all policies are the same.