Our 20-goal hitman joined the Academy's fitness coach Kevin Adams and the remaining students - Radio 1 DJ Edith Bowman, Top Of The Pops presenter Reggie Yates, comic Ade Edmonson, actresses Kim Medcalf (Eastenders) Debra Stephenson (Coronation St) and Dawn Steele (Monarch of the Glen) and DIY SOS presenter Nick Knowles - for their regular work-out.
So it was football skills for the students followed by penalties.
You can read a full rundown of Jermain's visit at the BBC's Comic Relief Fame Academy website by CLICKING HERE.
Highlights of Jermain's visit will be on Comic Relief Does Fame Academy tonight with shows on BBC1 9pm-10pm and then 10pm-10.30pm and BBC3 7.30-pm-9pm, 10pm-10.30pm and 11pm-11.30pm.
Find out more on Red Nose Day byCLICKING HERE.
Find out more on Comic Relief byCLICKING HERE.
Jermain Defoe provided a welcome surprise for students of the Comic Relief Fame Academy this morning.