関連ワード:
is it normal to shake while stretching is it normal to shake after stretching is it normal to shake while exercising is it normal to shake after exercising is it normal for babies legs to shake while stretching is it normal for babies to shake when stretching is it normal for legs to shake when stretching is it normal for muscles to shake when stretching is it normal for your legs to shake after stretching is it normal for muscles to twitch after stretching
