What is another word for wake up calls?
Pronunciation: [wˈe͡ɪk ˌʌp kˈɔːlz] (IPA) 
Synonyms for the phrase "wake up calls" are numerous, but let's take a look at a few options. First, you might consider using the term "morning alarms," which is a more formal and technical way of saying the same thing. Another option might be to use the phrase "arousing jolts," which implies a more forceful and sudden awakening. "Rude awakenings" is another phrase that could be used, particularly if the event that is waking someone up is unexpected or unpleasant. Whatever phrase you choose, remember that the goal is to describe something that prompts someone to rise and start their day.
