ðə mˈoʊst ɪfˈɪʃənt tˈuːlz kˈiːp ðə bˈɑːdi ɪn ɐ nˈuːtɹəl pəzˈɪʃən tə hˈɛlp ɹᵻdˈuːs ðə stɹˈɛs ˌɔn dʒˈɔɪnts ænd mˈʌsəlz, wˌɪtʃ ˈɔːlsoʊ ɹᵻkwˈaɪɚ lˈɛs ˈɛnɚdʒi tə jˈuːz.
The most efficient tools keep the body in a neutral position to help reduce the stress on joints and muscles, which also require less energy to use.