Try as you will, huff and puff if you must, but you're better off placing your eggs in another basket if you reckon you can beat Barcelona in a Champions League group match.
If you're a German side, that is.
A mouth-watering clash pitting two of Europe's heavyweights at one of the continent's finest stadiums, the Westfalenstadion, (of course) finished 0-0. However, the home side carved out a number of decent chances and were handed the perfect opportunity to reward their performance with a goal from the penalty spot ten minutes after half-time.
Marco Reus stepped up, but was superbly denied by a flying Marc-Andre ter Stegen save, with the German number two picking himself up to claim the rebound with equal measures of class.
In doing so, Opta have revealed the 27-year-old goalkeeper has now saved four of the last six penalties he's faced in the Champions League, offering Die Mannschaft boss Joachim Low a timely reminder of his undoubted ability.
While that in itself won't have been enough to deter the Bundesliga side ahead of kick-off, perhaps the fact that Barça are now unbeaten in their last 14 group stage clashes with German sides in the competition - winning 11 and drawing three - might have done otherwise.
That incredible run stretches back to 2001, when the Catalans lost to Bayer Leverkusen in Germany. Having found themselves in front via Luis Enrique, the Catalan club were pegged back by Yildiray Bastürk before eventually being put to the sword by an Oliver Neuville second-half winner.
However, for context, that was the season the Germans reached the final, so, hardly the most crushing defeat.
For whatever reason, La Blaugrana love taking on the Germans in the group stages. During that run they've seen off the likes of Werder Bremen, VfB Stuttgart, Leverkusen and Borussia Mönchengladbach. Rarely do they falter until the knockout stages, with Germany a happy hunting ground for the giants of Spanish football.
All in all, Dortmund shouldn't have bothered.
However, on a positive note for the German side, Die Borussen stopped Barça from netting in their opening fixture of a Champions League campaign for the first time since the 2009/10 season, when the club came unstuck against Internazionale. The Serie A side won the competition that season.
The result that day was 0-0, with Jose Mourinho's side defensive approach paying dividends to halt a side blessed with forward talent, as per usual.
Dortmund will take solace from their showing on Tuesday, as they also hit the crossbar in a clash that could so easily have yielded three points, but with the aforementioned stats behind them, you can only wish them good luck at Camp Nou.