A "sprint session" refers to a short and intense period of focused work or activity, often in a team or group setting. It involves concentrated efforts to achieve specific goals within a fixed timeframe. Full definition
Again, if it's your first sprint session in years you need to start way easier than you think. (jasonferruggia.com)
Follow the workout with a good sprint session of fast running for one minute, alternating with jogging for one minute, for a total of 20 minutes. (womenshealthandfitness.com.au)
Make room for two 20 - minute sprint sessions in your regular weekly routine. (fitnessandpower.com)