We typically use has/have as a main verb with an object to talk about common actions. There are lots of things that we have in English, meaning that we enjoy or experience them –
have breakfast/lunch/dinner/supper/a bite to eat/a light meal
have a hot or cold drink/a glass of wine/a cup of coffee or tea/some water
have a shower/a bath/a wash and shave
have a rest/a siesta/a good sleep/a bad dream/a good night/a good dream
have a walk/a swim/a good time/a nice evening/a day off/a break/a holiday/a busy day/a good journey/a good trip
have a word with someone/a chat/a conversation/a quarrel/an argument
have a headache/a sore throat/hay fever/a bad cold
have a job/some work to do/money/things/an opportunity/a chance/an affair