The Reds headed to France on Monday for a training camp in Evian that included a series of intensive sessions designed to optimise the condition of the squad before the season begins.
They then flew to Dublin for a meeting with Napoli at the Aviva Stadium which they dominated, running out 5-0 winners against the talented Serie A side.
Wijnaldum himself was on the scoresheet with the game’s second goal having returned to the pitch after a disrupted period during the tour of the United States.
And while the past six days have been challenging on the body, the Dutchman insisted the players are in good shape as the opener against West Ham United gets closer.