Micro-Interval Turbo Session: 20×1-Minute Zone 5 Efforts

Session Overview

Twenty 1-minute Zone 5 efforts with 1-minute recovery — the micro-interval format is brutally effective for building neuromuscular power and raising your VO2max ceiling. Unlike longer VO2max intervals (3-5 minutes), the short 1-minute format lets you sustain higher peak wattage throughout the entire set, maximising the neuromuscular stimulus. This is an advanced session suited to experienced cyclists with a solid training base.

What You’ll Need

• Turbo trainer or smart trainer
• Power meter (essential — this session is power-based)
• Cycling fan
• Heart rate monitor
• Water bottle (you’ll need it)

Warm-Up (15 minutes)

15 minutes easy Zone 2 spinning at 90-95rpm. At minutes 10 and 13, include a 20-second sharp effort (120% FTP) with full recovery before the main set. These short openers prime your fast-twitch fibres so the first main set interval isn’t a cold start into Zone 5.

Main Set

20×1-minute at 115-125% FTP, with exactly 1 minute easy Zone 1-2 recovery between each effort. Total working time: 20 minutes. Total session time including recovery: 40 minutes of intervals.

• Efforts 1-5: Target 115-120% FTP. Find your rhythm and resist the urge to go harder in the opening block — there are 15 more efforts to come.
• Efforts 6-15: Maintain 115-120% FTP. This is the bulk of the session and where the real adaptation happens. Focus on smooth, high-cadence pedalling (95-105rpm) rather than grinding.
• Efforts 16-20: Hold target power or push slightly to 120-125% FTP if you have anything left. Each effort should feel maximal by the final few reps.

Cool-Down (10 minutes)

10 minutes very easy Zone 1 spinning. Keep legs moving rather than stopping abruptly — this helps clear lactate and reduces post-session soreness. Stretch your quads and hip flexors immediately after dismounting.

Coaching Notes

• If you don’t have a power meter, use RPE 9/10 for the efforts and RPE 3-4 for recoveries. The 1:1 work-to-rest ratio is strict — don’t extend the recovery period.
• Completed this session before? Increase target power by 2-3% in the final block (efforts 16-20) as your adaptation improves.
• This session is demanding — place it on a day with easy training before and after. Not recommended within 48 hours of a long ride or key brick session.
• To make this more accessible: start with 12-15 reps rather than 20 and build the rep count over 4-6 weeks.