I agree with Akaisha. Sitting home all the time for fear of accident or illness that might occur if you travel is not a winning strategy, IMHO.
Of course a little extra prevention could minimize the risk. Strenuous climbing at altitude might warrant a preparatory exercise stress test if you are at risk by age or other illnesses and risks. Fitness training in advance can minimize strains and blisters. Still, the small risk of a problem would not hold us back from extended or remote travel.
And don't forget specific travel measures like immunizations and malaria pills, extra prescription meds in case of delays, and legitimate pharmacy packaging and even a copy of the prescription if you get searched by security or immigration.
San Francisco Area
ESR'd March 2010. FIRE'd January 2011.
As if you didn't know..If the above message contains medical content, it's NOT intended as advice, and may not be accurate, applicable or sufficient. Don't rely on it for any purpose. Consult your own doctor for all medical advice.