You could change how far your knees travel forward by widening your stance. Apart from that there is not much more you can do with the front squat in terms or bar placement etc. It looks like your...
The board skills are very similar. Its intimidating to watch when you don't understand how its all working, but once you have it down its fully addictive.
New to my woolworths, seems to be just new altogether. Similar ingredients to vitarium, taste the same, containers look the same. Haven't tried the strawberry yet.
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I got 4 packets of 'Past Use By' PB2 on ebay a while back for like $35. It was out of date by 6 months but it's still good. People have had packs of pb2 for years that are still fine.