"Marin, it depends what time are you aiming for. I think you can combine XC and mara training. For marathon just increase yr mileage, ideally 100miles a week or there about, but you can get away with 80 or even less depending on what time you are…"

"David, the reason why your Hb is ok, and b12 is low, is that b12 is not directily required for Hb production, it is required to regenerated folic acid(folate), which then used in the process of Hb production. If you get a lot of folate/folic acid,…"

"Fat are not converted to glucose, it is oxidized via different pathway to produce ATP. THe only part of fat that can be converted into glucose is glycerol, which is from trglyceride (holds 3 fatty accids together). …"

Interesting doc why some people stay thin on excessive calorie diet.https://www.youtube.com/watch?v=dAQr77QMJiwI know their all ate SAD high fat diet. Study participants were normal weight, and then their doubled their normal calorie intake for 4…

"Havent used hydroxy, only cyano and recently methyl.
I know methyl is less stable than cyano, but on the ampul  says till 11/2015."

"No, it is not dodgy, actually a very good service, received it following day.  Here is their site http://arnika-apo.de/ , based in Germany.
The can supply syringes for the extra charge."

"Do you clean yr skin with ethanol or something else be4 injecting?
If you want methyl cobalamin in UK, just email Manufaktur @ arnika-apo.de , then transfer money via paypal and you will get in a few days. 28EUR for 10 amps, plus 15 for shipping.…"

"No animal blends 20 bananas in one go or put half a pound of sugar or eat a box of dates in one go. So I would be on Dr. Graham side, and you also save some money buy not wasting so much food.
Why eat more than you need, and force your body to burn…"

"I dont think they thrive, look at their average life expectancy, which  currently is 68 years.
http://www.ncbi.nlm.nih.gov/pubmed/18457208"

"Tim van Ordern from runningraw.com is also pretty fast."