Katy Perry puts so much energy into each of her concerts that she's completely depleted by the end of a tour. The popstar is currently performing a string of shows around the world in support of her fifth studio album, 'Witness', which was released in June 2017.
The 33-year-old singer released her fifth studio album Witness last year, and she started promotional tour almost immediately.
Witness: The Tour started on September 19, 2017, and it will end on August 21, 2018 - almost a year on the road, with 115 shows in total, covering North America, South America, Asia, Europe, Africa, and Oceania.
Perry is not constantly on the road, of course, but a non-stop performances and flying all around the globe took its toll on the young singer.
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