Manuel Pellegrini's West Ham United got down to work in the Swiss sunshine on Wednesday morning.
The squad were put through their paces at the Sportplatz Ri-Au home of Swiss 3. Liga club FC Bad Ragaz, with the session kicking-off in temperatures of around 27C (81F).
However, by the end of the 100-minute session, which featured pass-and-move drills, technical work and an eleven-a-side match on a one-third size pitch, the rain which had fallen on Tuesday's session had returned and the temperature had fallen markedly.
The players will enjoy an afternoon of rest and recovery before starting two days of intensive work which will see them train three times on both Thursday and Friday ahead of their opening pre-season fixture with Challenge League club FC Winterthur on Sunday afternoon.
Pellegrini will also test his players against Wycombe Wanderers, Preston North End, Aston Villa and Ipswich Town before kicking-off the 2018/19 Premier League campaign at Liverpool on Saturday 11 August.