Loss of physical strength or the state of being unable to exert force due to fatigue or tension; also the deliberate relaxation of muscles (e.g., in sports or performance).
長時間の作業で脱力感を覚えたので、少し休憩した。
I felt exhausted after working for a long time, so I took a short break.
試合後は脱力してベンチに座り込んだ。
After the match he sank onto the bench, completely drained.
ヨガでは脱力して呼吸に意識を向けることが大切だ。
In yoga, it's important to relax the body and focus on your breathing.
緊張で肩に力が入っていたが、深呼吸して脱力した。
My shoulders were tense from nerves, but I took deep breaths and relaxed.