Kettlebell Deadlift Community

My back hurts.

↳ 머리부터 허리까지 일직선위치에 둔다고 생각하고 시선을 아래로 낮추면 괜찮을꺼에요!! 근데 고관절 힌지랑 꼬리뼈를 끌어올리는건 유지해야해요!!!

No matter how much I stick my butt out, it's impossible for my back to be straight like in the picture. The picture looks strangeㅜ

My back hurts.

Why is this in a back workout?

↳ because you use back muscles to deadlift....

Why is it that only the erect muscles are dying?

Is it correct for this to have a straight waist?