Mauricio Pochettino has started talking to the media in English after quitting Saints last month.
The Argentine always used an interpreter during his time at St Mary's, even though he spoke English to his players.
Pochettino dropped the interpreter for an interview with Spurs TV, however, and moved to ease concerns about his high-intensity training sessions, saying his new squad should not fear his innovative coaching methods.
"'The players don't have to be afraid,' Pochettino said.
"Our style is demanding - sometimes too much but we use common sense. We demand a lot from them because that is our style.
"Our philosophy is 'suffer in training so you don't suffer in the game'. But the players don't have to be afraid because we work with common sense all the time.
"We can only expect full commitment and a positive attitude."
Pochettino also confirmed Steffen Freund will remain on the club's coaching staff.
The former Spurs midfielder will work alongside assistant head coach Jesus Perez, first team coach Miguel D'Agostino and goalkeeping coach Toni Jiminez, who all came with Pochettino from Saints.