suck

一日を有意義に過ごすためには朝20分早く行動すると良いそうです。

suckと言いますと「＜・・・を＞吸う、しゃぶる」でお馴染みですが文中では第三語義の「（主に米･くだけて･否定的に） ＜物･事が＞ ひどく悪い」（『Wisdom英和辞典(第3版)』三省堂)となります。Merriam-Webster's Online Dictionary, 11th Editionでは’ slang : to be objectionable or inadequate‘と掲載されていました。(Shou-VR*)

The 20 Minute Morning Routine Guaranteed to Make Your Day Excellent
Medications, meditations, or chugging coffee not required.

Today sucked. You felt tense, stressed, and sulky.
Want tomorrow to be different? Want to be in a better mood the whole day? It’s easy: Work out early, for about 20 minutes, before you start your day.
http://business.time.com/2014/01/03/the-20-minute-morning-routine-guaranteed-to-make-your-day-excellent/