Submariners (prior to 2014) used to have to switch to an 18-hour day; it took about 2 weeks to get used to the 6-on, 12-off schedule (they've since switched to a 24-hour day). To go just 39 minutes longer... I don't think it would be difficult at all - maybe a day or two, if that.
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Submariners (prior to 2014) used to have to switch to an 18-hour day; it took about 2 weeks to get used to the 6-on, 12-off schedule (they've since switched to a 24-hour day). To go just 39 minutes longer... I don't think it would be difficult at all - maybe a day or two, if that.
Biorhythms are fake.
However, things like a diurnal sleep cycle (which is NOT a biorhythm) is real, and you would adjust to it in about a week.
the Martian "day" is less than 4% longer the earth. Easy adjustment
Actually, OUR biorhythms are set up for a 25-hour cycle.
Sleep studies and sensory deprivation trails sowed this.
Not long, probably a matter of days. Many people on Earth work to rhythms slightly or greatly different from 24 hours.
I think they could do it practically immediately. People lose track of time in isolation and this would be similar.
People working with Martian rovers already work to a Martian clock. It doesn't take long to adjust physicaly but it plays havoc with your social life!
Considering all the other hazards, disasters and emergencies they would have to cope with, biorhythms would be the least of their worries.
Cheers!
Not long