Pakistan batting coach Grant Flower thinks the Asian side's batsmen don't work hard enough on their games, saying that physical fitness is key to scoring runs at international level.
The 1992 World Cup winners went through a lean set of results which saw them dumped out of the World T20 after only winning one game, against Bangladesh.
Coach Waqar Younis has since resigned from his post while the Pakistan Cricket Board have appointed former captain Inzamam-ul-Haq as chief selector to try turn around results.
However, Flower says whatever changes are made off the field will only help if players work harder, especially on their conditioning.
Flower told ESPNCricinfo: "At the international level most of the guys' techniques are sound. With Pakistan, it is more trying to get the routine right but it is also about the preparation off the field regarding fitness.
"You not only need that in fielding and bowling but equally in batting. If you are physically fit it will definitely lead to a good life style and better judgement at the crease.
"Our players are very inconsistent with the way they practice. They do work on their weak areas but they could do a lot more.
"When you are an international player you should be waking up and asking yourself what I have to do more to improve myself. If you are not answering that question then I don't think you should be there."
Pakistan tour England in July where they will play four Tests, five ODIs and one T20I while they will also play two ODIs against Ireland.