Altitude, Bogotá

Don't know if you've been to BOG before. Presuming you haven't you should take note of Bogota's 8000-plus foot elevation before planning strenuous physical activity. If you plan about three days to to let your body adapt to the low ambient oxygen levels, you'll normally be fine. This has nothing to do with age nor physical condition nor athletic prowess, necessarily. I can tell you that even freuqent exposure to altitude changes doesn't help. The condition is called chronic hypoxia. As pilots are taught, one of the first symptoms of hypoxia in any form is euphoria, the idea held by the oxygen starved brain that things are getting better and better. So?
So, this means one of the worst guides to your hypoxic state or lack thereof is
your own impressions about it. So give yourself three nights, then ask yourself how you feel, then take on activities gradually. Pushing yourself when you feel tired at high elevations can exacerbate brain and tissue anoxia to the point where you either need suplemental oxygen or an immediate descent to lower elevations.