Xing Yi Quan appears to be a furious boxing, however, it can be practiced by people of any age for health enhancement(養生).
The training of Hun Yuan Zhuang(渾元樁) or Santi Shi(三体式), the Stationary Qigong may strengthen the core muscle and improve the balance. They may help relax and also focus the mind.
The beginners may practice 5 to 10 minutes of Hun Yuan Zhuang and Santi.
Wuxing Quan(五行拳 Five Elements Fists) and other sets of forms can be practiced slowly and gently like Taichi.