Cologne - If awards were dished out for friendly results and performances in training camps, there may be a surprise or two when it comes to the Bundesliga clubs that have impressed the most this winter.

Nothing tangible is actually on offer for mid-season form, but these six clubs will at least go into the second half of the season feeling primed to reach their objectives after a productive time of things in the last five weeks...

Winter form: WWW

Anybody thinking the winter break may have upset the rhythm of the Bayern juggernaut will have to think again, with the Reds going from strength to strength. Pep Guardiola's men checked in to their cherished Doha home for a training camp which heralded back-to-back 4-1 wins against Qatar All Stars and Al Hilal FC, as well as a 5-1 over VfL Bochum. David Alaba also made his competitive return and crocked duo Javi Martinez and Philipp Lahm both stepped up their respective recoveries, meaning there were only positives for Bayern this winter. Did we mention that Bastian Schweinsteiger also appears to be back to his best too?

Winter form: WWW

Potentially the only side capable of keeping up the chase at the top of the table, Wolfsburg have been gearing up to their Rückrunde opener against the league leaders on Matchday 18 ever since the final whistle was blown in their 2-1 win over 1.FC Köln in December. Chinese international Xizhe Zhang has been drafted in, but the fanfare over his arrival was muted when tragedy struck, a car accident depriving the world of talented midfielder Junior Malanda at the age of just 20. The Wolves responded with three wins out of three to warm up well for the restart.

Winter form: WWWD

Avoiding relegation is the unusual objective Borussia Dortmund have going into the second half of the season, but nobody at the club is in any doubt that this is the one and only priority over the next four months. To that end, an unbeaten sequence of winter results will come as a boost, with the likes of FC Sion, FC Steaua Bucuresti and FC Utrecht all beaten. However, the biggest positives have come in the shape of Marco Reus and Kevin Kampl, the former returning from injury and the latter impressing following a transfer which has seen him emerge as the Westphalians' potential saviour.

Winter form: DWWW

A lightning start to the season had Hoffenheim's hopes of a maiden European qualification justifiably roused, but a relapse into the bad defensive habits from last season midway through the Hinrunde has placed those hopes in jeopardy. During a trip to South Africa, Markus Gisdol tried to get back to basics by shoring up his defence - with success. Just two goals were conceded while 12 were scored in four warm-up games, showing that Gisdol's envied attack has not suffered from a shift in focus to defensive solidity. "We got a lot done. I think we’ve taken another step in the right direction," said .

Winter form: WWW

Köln's return to the top flight has been something of a mixed bag: awe-inspiring victories - such as against BVB - intermingled with harsh lessons in life in the big time, like the one at Bayer 04 Leverkusen - which is why finding a middle ground has been coach Peter Stöger's priority in a bid to guide his club to a comfortable league finish. Victory in the Florida Cup, which also involved Leverkusen, showed that they had matured under the winter sun of the Sunshine State. "Our togetherness is really special. The squad is completely intact and it’s fun being a part of this team,” says captain Matthias Lehmann.

Winter form: WWWD

Faced with the prospect of yet another relegation battle, VfB Stuttgart rather unsurprisingly turned once again to the wisdom and experience of Huub Stevens, the man who successfully guided them to safety last season. He has thus far succeeded in taking the Swabians out of the drop zone, but with only goal difference keeping their heads above water, a lot of work is still to be done. Remaining unbeaten during their winter training camp in Lagos, Portugal, is therefore just . "I feel I’ve got to know the players a little bit better here. I now have a clearer picture of what we need to work on," says the veteran Dutch tactician.