<human>: Can you succinctly summarize the text in 1-3 sentences?

I asked a couple of weeks ago whether or not the lotus position was necessary  but didn't get any replies - the reason I asked was because I had hurt my foot and couldn't achieve the position - in the end I managed to do it the 'other way round' for that foot, now my foot is OK and I can get that position fine.

The 'guide' I got was a PDF that now suggests some breathing exercises as well (after 14 days of getting into the preliminary routine).

I have noticed a lot of improvement from following these initial meditation exercises, which I do mostly every morning and every night. Because they require no apparatus I have been able to do them anyplace I am at.

I am worried about these 'breathing' exercises as it says they might cause some people problems - is there anything to worry about with trying them once or twice?

Note: I have deviated from my normal exercises a bit since starting this - I do the meditation exercises for about an hour and then do my normal weights immediately after that for about 1/2 hour. 

I do the meditation exercises again before I go to bed (I spend longer on these now at night). I had some 15kg weights but bought 25's which I use now - just basic reps of up and down and some reaching.

I feel a lot better with doing the meditation, but worry about the breathing exercises if they can do harm - should I go easy on the weights or even try these exercises at all?
<bot>: fairly fit guy, starting out with meditation exercises alongside low weights - programme mentions breathing exercises that could be dangerous for some people - ok to try them for a couple of weeks?