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Discover your HEART RATE and POWER TRAINING ZONES while boosting your threshold with this Amazing Workout! 

Spinervals 27.0 - Threshold Test & Suffer Fest serves dual purposes. A great threshold building workout designed to boost your anaerobic threshold and sustainable power output for time trialing events including triathlons, this workout also functions as a repeatable 'field test' used by many prominent coaches and exercise physiologists to determine an athletes 'Functional Threshold', or that output of work (power) one can sustain on average over a 20 minute period.

By learning one's functional threshold and retesting it every 6-8 weeks, an athlete can accurately determine the proper training zones as well as assess their training progress over time. This form of performance testing is critical for anyone interested in getting faster on the bike and achieving optimal results through a structured training program.

Join Coach Troy Jacobson and the athletes from the New Jersey cycling and multisport community in this useful and effective workout that will help you go faster in your next race!

For DVD Player (North American NTSC)

ITEM IS: USED - DVD IN SLEEVE

WHAT YOU GET: This auction is for the original media, and includes only the media (ie. CD, DVD ...) UNLESS specifically stated above and/or in the title. If more than just the media is included, it will state which items are (ie. artwork, case, etc ). Items that come in a sleeve refer to a generic CD sleeve (typically white) and will be sent with shipping protection to avoid damage during transit. If available, we will also send the front and/or back CD inserts if in stock. If these are important to you, please message us to verify we have them available to send. Please do not assume items are included other than what's stated. Again, ask questions PRIOR to purchasing if you have any concerns. IMAGES: All images/pictures are stock photos and are for reference only, mainly to show the type of music you will be getting. Please read "WHAT YOU GET" for what is included with the media. SHIPPING: We typically ship all items out within 2-4 business days after payment is received. In regards to the stated shipping and handling, remember that these costs include more than just postage. We combine shipping and handling, with each additional item after the first just $2 more. Message us for an invoice if Ebay doesn't automatically adjust it. International buyers not shipping to an address within the U.S. can expect their orders to take anywhere from 5 days to 4 weeks to be received, depending on how fast/well USPS is moving. Additionally, international orders typically have to go through governmental customs, which can delay the arrival process. Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying. Customs fees are normally charged by the shipping company or collected when you pick the item up. These fees are not additional shipping charges.