Playing After Sleepless Nights Far Away From Home

I participated in three individual tournaments from August 20 to September 27, playing 19 games.
Due to the excessive lack of sleep and other unusual conditions, I lost or drew several games to weaker opposition. And most of the losses were after being the first to achieve a "+-" (winning) position.
Let's see what happened.
During the August tournament in the country, I managed to sleep only a total of 4 hours throughout the 3 nights. ..
Then at the middle of September, I was very sick and at the verge of fainting during the first two morning games, after an hour of travelling in a car in the mornings and being compelled to start the games immediately, without time for recreation.
Finally at the end of the same month, sharing a room again with another player, a total of 2 hours of sleep throughout the 2 whole nights had its impacts on my play...
All these circumstances resulted in losing 9 rating points rather than gaining 40-50, which could have been a realistic expectation versus those opponents.

The same happened in a February tournament, also with the nights spent far away from home, with a final result of +0 -4 =0, also against not very good opposition, having to play after 0 (zero/null) hour of sleep.
And in July, the only decent result (27+ rating points, beating a 2300-FM, drawing an IM, etc) had very much to do to the fact that that event, the sole one in this "series", was held in a place that was easily reachable from home in the mornings--I was sleeping at home...
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