Most divers have pre-dive and post-dive rituals that help them either maintain or regain focus.

Most divers use a weighted sled to dive down and use an inflatable bag to return to the surface ( AIDA ).

Most wreck divers use a minimum of the rule-of-thirds for gas management.

Most cave divers recognize five general rules or contributing factors for safe cave diving, which were popularized, adapted and became generally accepted from Sheck Exley's 1977 publication Basic Cave Diving: A Blueprint for Survival.

Most UK cave divers dive solo.

Most cave divers in the U. S. balk at the use of any sort of floating guide line, 6 mm polypropylene line is the norm in UK precisely because it does float-the line is regularly anchored to stones, lead weights, or whatever is needed and the floating keeps it clear of mud and silt.

Most attacks stem from disruption of a moray's burrow ( to which they do react strongly ), but an increasing number also occur during hand-feeding of morays by divers, an activity often used by dive companies to attract tourists.

Most commercial operators and dive clubs serving divers insist that each diver is able to show them " certification ", for the type of diving the diver intends to do.

Most free divers will weight themselves to be positively buoyant at the surface, and use only enough weight to minimise the effort required to swim down against the buoyancy at the start of a dive, while retaining sufficient buoyancy at maximum depth to not require too much effort to swim back up to where the buoyancy becomes positive again.

Most divers then close the tank a quarter turn for an added element of safety.

Most of Andros's tourism comes from SCUBA divers — looking to dive the barrier reef, Tongue of the Ocean and the Blue Holes — and bonefisherman, and those looking for relaxation off the beaten path with easy air connections.

Most cases occur in scuba divers and fliers, and is easily diagnosed when presented to physicians immediately after exposure.

Most 21st century surface supplied divers also have voice communication with the surface team, and this allows constant monitoring of the diver's condition by listening to the breathing sounds.

Most ships were salvaged, but the remaining wrecks are now a favoured haunt of recreational divers.

Most solo divers are quite gregarious and very much want to share their enjoyment of diving with others – they just want to do it when they get to the surface.

Most canals have a limit on height imposed either by bridges or by tunnels.

Most steel engines have a thermodynamic limit of 37 %.

Most of these limit the right to a jury to try issues regarding grounds or entitlement for divorce only.

Most casinos allow paytable wagers of between 1 and 20 numbers, but some limit the choice to only 1 through 10, 12 and 15 numbers, or " spots " as keno aficionados call the numbers selected.

Most implementations include at least options to specify the number of queries to send per hop, time to wait for a response, the hop limit and port to use.

Most oppose high levels of immigration and support the lowering of the current 24 week abortion limit.

Most were passionately opposed to various government attempts to limit cryptography — export laws, promotion of limited key length ciphers, and especially escrowed encryption.

Most truckers had difficult schedules to keep and as a result had to maintain a speed above the posted speed limit in order to reach their destinations on time.

Most often choirs consist of four sections intended to sing in four part harmony, but there is no limit to the number of possible parts as long as there is a singer available to sing the part: Thomas Tallis wrote a 40-part motet entitled Spem in alium, for eight choirs of five parts each ; Krzysztof Penderecki's Stabat Mater is for three choirs of 16 voices each, a total of 48 parts.

Most clubs have a limited membership based upon specific criteria, and limit the events to members to increase the security of the members, thus creating an increased sense of cameradery and belonging.

Most convenience stores have a cash drop slot into a time-delay safe so clerks may limit the amount of cash on hand.

Most questions have a 5 second time limit after a question has been read.

Most transistors, and especially power transistors, exhibit long base-storage times that limit maximum frequency of operation in switching applications.

Most licenses for software sold at retail disclaim ( as far as local laws permit ) any warranty on the performance of the software and limit liability for any damages to the purchase price of the software.

Most recently Canada, Australia, and Chile signed agreements with Europe that limit the use of the term " champagne " to only those products produced in the Champagne region.

Most every area in the United States now has a published soil survey, which includes interpretive tables as to how soil properties support or limit activities and uses.

Most noticeably it allowed states to raise the speed limit to 65 miles per hour ( 105 km / h ) on rural Interstate highways.

Most dermatologists limit their cosmetic practice to minimally invasive procedures.

" Most of the border stations broadcast at 250, 000 watts, five times the U. S. limit, meaning that their signals were picked up all over North America, and at night as far away as Europe and the Soviet Union.

Most public roads in most countries have a legally assigned numerical maximum speed limit which applies on all roads unless otherwise stated ; lower speed limits are often shown on a sign at the start of the restricted section, although the presence of streetlights or the physical arrangement of the road may sometimes also be used instead.

Most Ironman events have a strict time limit of 17 hours to complete the race, where the Ironman race starts at 7: 00 AM, the mandatory swim cut off for the swim is 2 hours 20 minutes, the bike cut off time is 5: 30 PM, and all finishers must complete their marathon by midnight.

Most economists advocate independent central banks to limit the influence of politics on interest rates.

Most Lisps set a limit on the number of composed forms they support ; Common Lisp and Scheme both provide forms with up to four repetitions of the a and d. However, further compositions can easily be defined by the user.

Most of the popular performance improvement methods, such as TQM or reengineering, are not focused improvement methods, i. e. they do not distinguish working on the factors that limit a system's performance ( constraints ) — which brings immediate results, from working on non-constraints — which does not bring any results, only increases costs and distracts management's attention.

Most avant-garde creators, true to their interest in the self-sufficiency of pure movement, have tended to dress their dancers in simple lines and solid colors ( often black ) and to give them a bare cyclorama for a setting.

Most of the Rebels got away since they could make better time through the stiff brush than their naked pursuers.

Most important of all, the less developed countries must be persuaded to take the necessary steps to allocate and commit their own resources.

Most of the others will swallow their $.50 to $3 charge rather than lose a good customer.

Most skilled industrial workers, nevertheless, still acquire their skills outside of formal training institutions.

Most Jewish mothers are determined to exercise vigilance over the social and sexual lives of their daughters by keeping them home.

Most pastors and laymen, even though they believe it to be important, assume that the ecumenical movement lies outside the province of their parishes.

Most children love the animated puppet faces and their flexible bodies, and they prefer to see them as though the puppets were in action, rather than put away in boxes.

( 1 ) Most of the realtors minimized their own understanding of and role in the racial issue, pleading that they only reflect the attitudes and intentions of their society.

Most babes survived the techniques of pituitary manipulation that kept their bodies small, eliminating the necessity of transfers from smaller to larger shells.

Most of their original objections about `` shells '' were overridden by the relief that these hideous ( to them ) bodies were mercifully concealed.

Most amphibians lay their eggs in water and have aquatic larvae that undergo metamorphosis to become terrestrial adults.

Most species lay their eggs underground and when the larvae hatch, they make their way to adjacent bodies of water.

Most amphibians, however, are able to exchange gases with the water or air via their skin.

Most eggs contain the pigment melanin which raises their temperature through the absorption of light and also protects them against ultraviolet radiation.

Most are photosynthetic like plants, and " simple " because their tissues are not organized into the many distinct organs found in land plants.

* Most monocots are unable to thicken their stems once they have formed, since they lack the cylindrical meristem present in other angiosperm groups.

Most of the basins take their names from cities or towns located at their rims.

Most apparent is their sheer bulk ; complexes averaged more than 200 rooms each, and some enclosed up to 700 rooms.

Most do not enter the World to Come immediately, but now experience a period of review of their earthly actions and they are made aware of what they have done wrong.

Most metals and alloys can be work hardened by creating defects in their crystal structure.