bracing
adjective uk/ˈbreɪ.sɪŋ/ us/ˈbreɪ.sɪŋ/
（尤指空气或活动）清新的;令人心旷神怡的
(of weather) cold and perhaps windy; (of an activity) making you feel full of energy because it is done outside when the weather is cold and perhaps windy
We enjoyed a bracing walk on the beach. 我们在沙滩上散步，感到心旷神怡。