This may seem obvious, but deep, even breathing (despite the rushing slipstream) and controlling your heart-rate are essential to your continued survival.
1	This	this	PRON	DT	Number=Sing|PronType=Dem	3	nsubj	3:nsubj|4:nsubj:xsubj	Discourse=adversative-concession:12->13:2|Entity=(12-abstract-new-cf2-1-cata)
2	may	may	AUX	MD	VerbForm=Fin	3	aux	3:aux	_
3	seem	seem	VERB	VB	VerbForm=Inf	0	root	0:root	_
4	obvious	obvious	ADJ	JJ	Degree=Pos	3	xcomp	3:xcomp	SpaceAfter=No
5	,	,	PUNCT	,	_	6	punct	6:punct	_
6	but	but	CCONJ	CC	_	24	cc	24:cc	Discourse=elaboration-additional:13->11:0
7	deep	deep	ADJ	JJ	Degree=Pos	10	amod	10:amod	Entity=(12-abstract-acc:com-cf2-18-coref(13-event-new-cf3-4-sgl|SpaceAfter=No
8	,	,	PUNCT	,	_	7	punct	7:punct	_
9	even	even	ADJ	JJ	Degree=Pos	10	amod	10:amod	_
10	breathing	breathing	NOUN	NN	Number=Sing	24	nsubj	24:nsubj	_
11	(	(	PUNCT	-LRB-	_	15	punct	15:punct	Discourse=adversative-concession:14->13:0|SpaceAfter=No
12	despite	despite	ADP	IN	_	15	case	15:case	_
13	the	the	DET	DT	Definite=Def|PronType=Art	15	det	15:det	Entity=(14-place-new-cf5-3-sgl
14	rushing	rush	VERB	VBG	VerbForm=Ger	15	amod	15:amod	_
15	slipstream	slipstream	NOUN	NN	Number=Sing	10	obl	10:obl:despite	Entity=14)|SpaceAfter=No
16	)	)	PUNCT	-RRB-	_	15	punct	15:punct	Entity=13)
17	and	and	CCONJ	CC	_	18	cc	18:cc	Discourse=same-unit_m:15->13:1
18	controlling	control	VERB	VBG	VerbForm=Ger	10	conj	10:conj:and|24:csubj	_
19	your	your	PRON	PRP$	Case=Gen|Number=Sing|Person=2|Poss=Yes|PronType=Prs	22	nmod:poss	22:nmod:poss	Entity=(15-abstract-new-cf4-4-sgl(5-person-giv:inact-cf1-1-ana)
20	heart	heart	NOUN	NN	Number=Sing	22	compound	22:compound	SpaceAfter=No|XML=<w>
21	-	-	PUNCT	HYPH	_	20	punct	20:punct	SpaceAfter=No
22	rate	rate	NOUN	NN	Number=Sing	18	obj	18:obj	Entity=15)|XML=</w>
23	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	24	cop	24:cop	_
24	essential	essential	ADJ	JJ	Degree=Pos	3	conj	3:conj:but	_
25	to	to	ADP	IN	_	28	case	28:case	_
26	your	your	PRON	PRP$	Case=Gen|Number=Sing|Person=2|Poss=Yes|PronType=Prs	28	nmod:poss	28:nmod:poss	Entity=(16-event-new-cf6-3-coref(5-person-giv:act-cf1-1-ana)
27	continued	continued	ADJ	JJ	Degree=Pos	28	amod	28:amod	_
28	survival	survival	NOUN	NN	Number=Sing	24	obl	24:obl:to	Entity=16)12)|SpaceAfter=No
29	.	.	PUNCT	.	_	3	punct	3:punct	_
