I just can't see how you'd find the TIME and energy to excersise, let alone sit on the beach... The trips usally go: wake up, last minute fiddle w camera gear, breakfast if you can squeeze it in, dive, dive, lunch, dive, dive, snack, nitedive, dinner and checking out days photocrop... then crosseyedly trying to set up camera gear for next day - nodding off and finally deciding that cleaning o-rings in the morning instaed of having long breakfast is better than cleaning orings while half brain is asleep... I could not sqeeze in excersise in a divetrip, but perhaps if you are triathalon-fit you would have different kind of energy-levels
It definitely takes a bit of discipline more than fitness levels. I set my alarm to make sure I do my morning stretch. It helps with energy levels throughout the day.
I don't check my photos too much at the end of the day but maybe every other day. Downloading is pretty much automatic and I just write notes on what was seen and details of that sort if needed. Takes 30 mins. My gear is setup the night before so I don't fiddle with it in the morning. A bit of strength training and stretching that finishes an hour before bedtime helps me pass out like a baby for 6-7 hours. In that last hour, I may fiddle a bit with the day's catch but usually I prefer to read or write. I dunno, being on location tends to be the most regimented period of my life. Regular sleep and waking hours, with tasks done on schedule.
1hr split at the beginning and end of the day isn't so bad, once I got used to that it was easy to maintain. Not doing the morning blood flowing exercises, I feel more lethargic throughout the day. Same for the night calisthenics and stretch, the endorphin release post exercise relaxes the body. And as it has been shown in rats and human studies, it helps with off-gassing too... and I don't mean the food by product kind. ![]()