The study recommends that patients get a daily amount of 1.4 to 1.5 grams of protein per kilogram of body weight to help renew and repair the bone marrow. Iron and Bone Marrow Function A key function of bone marrow is to produce red blood cells -- the iron-containing cells that carry oxygen to every part of your body.
A cross-country mountain biker on a trail in Utah. Cross-country (XC) cycling is the most common discipline of mountain biking.Cross-country cycling became an Olympic sport in 1996 and is the only form of mountain biking practiced at the Olympics.ross-country bicycles are some of the lightest mountain bikes, typically between 7 and 16 kilograms (15 and 35 lb).
I race both road and CX, and used to race mountain bikes so can talk (endlessly) about the various merits and drawbacks of all 3! A CX bike is a great all round choice and perfect for commuting as; - the geometry is more upright (relaxed) than a road bike. - its typically geared down (i.e. gearing is somewhere between a road and mountain bike) - components are more durable (many CX bikes are equipped with mountain bike components) - it will probably be cheaper than a road bike. As others have said, its really a matter of what you plan to use the bike for.