ので立つ、空いたをと、すぐ手を上げたくなります。でも、足がそろったままだと、が動いた瞬間に体が横へ流れやすいです。を持っていても、が落ち着いていないと、ひじやかばんがのに当たりやすくなります。
When people stand on a morning train and find an open strap, they want to raise their hand right away. But if their feet stay lined up, their body can slide sideways when the train starts moving. Even when they are holding a strap, if their footing is unstable, their elbow or bag can hit nearby people more easily.
とくにドアのや、が区間では、前より横のゆれがことがあります。その、をだけにたり、進むにななめにしたりすると、体の重さを受けやすくなります。広げるはありません。足のがと、を手も上げやすくなって、でも肩だけでふんばる形になりにくいです。
Especially near the doors or on sections with many curves, the sideways sway can be stronger than the forward motion. At that time, if people move one foot a little forward or angle it slightly toward the direction of travel, their body can receive the weight more easily. There is no need to spread the legs wide. Once the foot direction is set, the hand that takes the strap rises more naturally, and even a sudden brake is less likely to leave all the work to the shoulder.
だから、立ったばかりのが、つり革より先にを一回見ていることがあります。運動の話ではありません。を半歩ずらして、かばんのまで決めてから手を上げるだけで十分です。その一回があると、の駅までの立ちがかなりなります。
That is why someone who has just started standing may look down at their feet before reaching for the strap. This is not about sports. It is enough to shift one foot by half a step and decide the direction of the bag before raising the hand. That one check makes the way of standing until the next station much calmer.