Dani Clos says he's primed to "give it my all" when he tackles Friday's practice at the Belgian GP.
The HRT test driver will be action for the backmarker outfit for the fifth time this season, replacing Indian racer Narain Karthikeyan.
"Once again I have a chance to step into the car and work for the team and that fills me with satisfaction," said the Spaniard.
"Especially after having run in the events leading up to the summer break, for me it is really important to stay active and be able to continue growing alongside my teammates Pedro and Narain.
"Spa is a circuit where I have great memories. I won my first international one-seater race there, that's something you never forget and it makes me have special feelings for this circuit."
Like many of the drivers, Clos made the most of the summer break to relax but did not neglect his training.
"I've been able to rest these days, at least by not travelling, but I haven't stopped training and I've stepped up the rhythm since last week to make it to Belgium in prime conditions to be able to give it my all."