Why did the disciples fall asleep during Jesus' prayer?

In Luke 22:45, we read that while Jesus was in profound agony praying, His disciples succumbed to sleep. This incident exemplifies human frailty and the weakness of the flesh, even among the closest followers of Christ. Despite His warnings about impending temptation, the disciples' weariness portrays a significant truth: even the most devoted believers face moments of weakness. This should lead Christians to humility, recognizing that reliance on one's strength can result in spiritual failure. Such moments serve as reminders of the necessity of watchfulness and prayer in the life of the believer, encouraging Christians to seek strength from God to overcome temptation.