When the heel is unstable, toes tend to grip which can lead to tendinitis, worsening of toe deformities, nail problems, corns and calluses.

如果脚后跟不稳定，脚趾就会紧紧抓地，可能导致肌腱炎、加剧脚趾变形、指甲异常、鸡眼、产生老茧。

youdao

Bankers admitted to developing chronic pain, never-ending colds, anger management problems and nervous tics such as nail-biting.

FORBES: Wall Street Hours Mean Health Troubles

Congress also needs to fix looming problems with the Alternative Minimum Tax, a complicated shadow tax system originally designed to nail fat cats.

FORBES: Where's My Tax Cut?